Security Products
1-888-314-JTAC
(1-888-314-5822 - toll free in U.S., Canada, and Mexico)
or go to the link to request service
http://www.juniper.net/support/requesting-support.html
Secure Services Gateway (SSG) 20
Hardware Installation and Configuration Guide- Beta3
ScreenOS Version 5.4.0
Juniper Networks, Inc.
1194 North Mathilda Avenue
Sunnyvale, CA 94089
USA
408-745-2000
www.juniper.net
Part Number: 530-015646-01, Revision Beta3
Copyright Notice
The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate
radio-frequency energy. If it is not installed in accordance with Juniper Network’s installation instructions, it may cause interference with
radio and television reception.
This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in
part 15 of the FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential
installation. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Consult the dealer or an experienced radio/TV technician for help.
Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
Caution:
- Changes or modifications to this product could void the user's warranty and authority to operate this device.
- To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm must be maintained between the
antenna of this device and all persons.
- This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter
Disclaimer
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE
INFORMATION PACKET THAT SHIPPED
WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE
SOFTWARE LICENSE OR LIMITED
WARRANTY, CONTACT YOUR JUNIPER NETWORKS REPRESENTATIVE FOR A COPY.
Writer: Carrie Nowocin
Editor: Lisa Eldridge
DGT Warning:
依據 低功率電波輻射性電機管理辦法
第十二條 經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設
計之特性及功能。
第十四條 低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停用，並改善至無干
擾時方得繼續使用。
前項合法通信，指依電信規定作業之無線電信。低功率射頻電機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。
1.本機限在不干擾合法電台與不受被干擾保障條件下於室內使用
2.為減少電磁波干擾, 請妥適使用
Copyright © 2006 Juniper Networks, Inc. All rights reserved.
Juniper Networks and the Juniper Networks logo are registered trademarks of Juniper Networks, Inc. in the United States and other countries. All other
trademarks, service marks, registered trademarks, or registered service marks in this document are the property of Juniper Networks or their respective
owners. All specifications are subject to change without notice. Juniper Networks assumes no responsibility for any inaccuracies in this document or for
any obligation to update information in this document. Juniper Networks reserves the right to change, modify, transfer, or otherwise revise this publication
without notice.
FCC Statement
The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency
energy. If it is not installed in accordance with Juniper Network’s installation instructions, it may cause interference with radio and television reception.
This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC
rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no
guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Consult the dealer or an experienced radio/TV technician for help.
Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
Caution: Changes or modifications to this product could void the user's warranty and authority to operate this device.
Disclaimer
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED
WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED
WARRANTY, CONTACT YOUR JUNIPER NETWORKS REPRESENTATIVE FOR A COPY.
ii
Writer: Carrie Nowocin
Editor: Lisa Eldridge
Table of Contents
About This Guide vii
Organization .................................................................................................. vii
WebUI Conventions ...................................................................................... viii
CLI Conventions............................................................................................ viii
Obtaining Documentation and Technical Support........................................... ix
Chapter 1
Chapter 2
Hardware Overview 1
Port and Power Connectors .............................................................................2
Front Panel ...................................................................................................... 3
System Status LEDs ................................................................................... 3
Port Descriptions .......................................................................................5
Ethernet Ports ..................................................................................... 5
Console Port .......................................................................................5
AUX Port.............................................................................................5
Mini Physical Interface Module Port Descriptions ......................................6
Back Panel .......................................................................................................8
Power Adapter...........................................................................................8
Radio Transceiver......................................................................................8
Grounding Lug ........................................................................................... 8
Antennae Types......................................................................................... 9
Universal Serial Bus (USB) Host Module ..................................................... 9
Installing and Connecting the Device 11
Before You Begin ........................................................................................... 11
Equipment Rack Installation ..........................................................................12
Connecting the Interface Cable to a Device....................................................12
Connecting the Power....................................................................................13
Connect the Device to a Network................................................................... 13
Connect an SSG 20 Device to an Untrusted Network ............................... 13
Connecting Ethernet Ports ................................................................13
Connecting Serial (AUX/Console) Ports..............................................13
Connect an SSG Device to an Untrusted Network....................................14
Connect Mini PIMs to an Untrusted Network ....................................14
Connecting Other Mini PIMs .............................................................15
Connect the Device to an Internal Network or a Workstation ..................16
Connecting Ethernet Ports ................................................................16
Connecting the Wireless Antennae....................................................16
Chapter 3
Configure the Device 17
Access the Device ..........................................................................................18
Using a Console Connection .................................................................... 18
Using the WebUI .....................................................................................19
Table of Contents iii
SSG 20 Hardware Installation and Configuration Guide
Using Telnet ............................................................................................ 20
Default Device Settings ..................................................................................21
Basic Device Configuration ............................................................................ 23
Changing the Root Admin Name and Password ......................................23
Setting the Date and Time ....................................................................... 24
Bridge Group Interfaces ...........................................................................24
Administrative Access ............................................................................. 25
Management Services..............................................................................25
Host and Domain Name .......................................................................... 25
Default Route...........................................................................................26
Management Interface Address ...............................................................26
Backup Untrust Interface Configuration ................................................... 26
Wireless Configuration...................................................................................27
Wireless Network Configuration .............................................................. 28
Mini PIM Configuration ..................................................................................30
Asymmetrical DSL (ADSL) 2/2+ Interface ...............................................30
The ISDN Interface ..................................................................................34
The T1 Interface ......................................................................................35
The E1 Interface ...................................................................................... 36
The V.92 Modem Interface ......................................................................37
Basic Firewall Protections .............................................................................. 37
Verify External Connectivity ..........................................................................38
Reset the Device to Factory Defaults ..............................................................38
The Reset Pinhole.................................................................................... 38
Authentication and Encryption..........................................................30
Virtual Circuits to an ADSL2/2+ Interface......................................... 31
VPI/VCI and Multiplexing Method......................................................32
PPPoE or PPPoA ...............................................................................32
Static IP Address and Netmask.......................................................... 33
Chapter 4
Appendix A
Appendix A
Servicing the Device 41
Tools and Parts Required ...............................................................................41
Replacing a Physical Interface Module ...........................................................41
Removing a Blank Faceplate....................................................................42
Removing a Mini PIM ..............................................................................42
Installing a Mini PIM................................................................................43
Memory Upgrade ........................................................................................... 44
Specifications A-I
SSG 20 Physical Specifications ..........................................................................I
Electrical Specification ......................................................................................I
Environmental .................................................................................................II
Certifications....................................................................................................II
Safety ........................................................................................................II
EMC (Emissions)........................................................................................II
EMC Immunity ..........................................................................................II
European Telecommunications Standards Institute (ETSI) ........................III
T1 Interface ..............................................................................................III
Connectors......................................................................................................III
Initial Configuration Wizard A-I
Using the Initial Configuration Wizard ........................................................I
iv Table of Contents
Table of Contents
Index........................................................................................................................IX--1
Table of Contents
v
SSG 20 Hardware Installation and Configuration Guide
vi Table of Contents
About This Guide
The Juniper Networks Secure Services Gateway (SSG) 20 device is an integrated
router and firewall platform that provides Internet Protocol Security (IPSec) Virtual
Private Network (VPN) and firewall services for a branch office or a retail outlet.
Juniper Networks offers two models of the SSG 20 device:
SSG 20 Ethernet only
SSG 20-WLAN which has four integrated wireless interfaces.
Both of the SSG 20 devices support auxiliary (AUX), universal storage bus (USB)
storage, and two mini physical interface module (PIM) slots that can hold any of the
mini PIMs. The devices also provide protocol conversions between local area
networks (LANs) and wide area networks (WANs).
Organization
This document contains the following chapters:
Chapter 1, “Hardware Overview,” describes the chassis and components of an
SSG 20 device.
Chapter 2, “Installing and Connecting the Device,” describes how to install an SSG
20 device in a standard 19-inch equipment rack and how to connect cables and
power to the device.
Chapter 3, “Configure the Device,” describes how to configure and manage an
SSG 20 device and how to perform some basic configuration tasks.
Chapter 4, “Servicing the Device,” describes service and maintenance procedures
for an SSG 20 device.
Appendix A, “Specifications,” provides general system specifications for an SSG 20
device.
Appendix B, “Initial Configuration Wizard,” describes the Initial Configuration
Wizard steps.
Organization vii
SSG 20 Hardware Installation and Configuration Guide
WebUI Conventions
A chevron ( > ) shows the navigational sequence through the WebUI, which you
follow by clicking menu options and links. The following figure shows the following
path to the address configuration dialog box—Objects > Addresses > List > New:
Figure 1: WebUI Navigation
To perform a task with the WebUI, you first navigate to the appropriate dialog box,
where you then define objects and set parameters. The set of instructions for each
task is divided into navigational path and configuration settings:
The next figure lists the path to the address configuration dialog box with the
following sample configuration settings:
Objects > Addresses > List > New: Enter the following, then click OK:
Address Name: addr_1
IP Address/Domain Name:
IP/Netmask: (select), 10.2.2.5/32
Zone: Untrust
Figure 2: Navigational Path and Configuration Settings
CLI Conventions
viii WebUI Conventions
The following conventions are used to present the syntax of CLI commands in
examples and in text.
About This Guide
In examples:
Anything inside square brackets [ ] is optional.
Anything inside braces { } is required.
If there is more than one choice, each choice is separated by a pipe ( | ). For
example:
set interface { ethernet1 | ethernet2 | ethernet3 } manage
means “set the management options for the ethernet1, the ethernet2, or the
ethernet3 interface.”
Variables are in italic type:
set admin user name1 password xyz
In text:
Commands are in boldface type.
Variables are in italic type.
NOTE: When entering a keyword, you need to type only enough letters to identify the
word uniquely. For example, typing set adm u kath j12fmt54 is enough to enter
the command set admin user kathleen j12fmt54. Although you can use this
shortcut when entering commands, all the commands documented here are
presented in their entirety.
Obtaining Documentation and Technical Support
To obtain technical documentation for any Juniper Networks product, visit
www.juniper.net/techpubs/
For technical support, open a support case using the Case Manager link at
http://www.juniper.net/support/
1-408-745-9500 (outside the United States).
If you find any errors or omissions in this document, please contact us at the email
address below:
techpubs-comments@juniper.net
.
or call 1-888-314-JTAC (within the United States) or
Obtaining Documentation and Technical Support ix
SSG 20 Hardware Installation and Configuration Guide
x Obtaining Documentation and Technical Support
Chapter 1
Hardware Overview
This chapter provides detailed descriptions of the SSG 20 chassis and components.
It contains the following sections:
“Port and Power Connectors” on this page
“Front Panel” on page 3
“Back Panel” on page 8
1
SSG 20 Hardware Installation and Configuration Guide
Port and Power Connectors
Antenna AAntenna B
PIM 2PIM 1
SSG 20
POWER
STATUS
12
802.11a
PIM 1
PIM 2
b/g
WLAN
AUX
AUX
LINK
10/100
10/100
10/100
10/100
0/0
0/0
0/0
10/100
0/0
0/0
AUX Console e0/0 e0/1 e0/2 e0/3 e0/4
Table 1 shows the ports and power connectors on an SSG 20 device.
Table 1: SSG 20 Port and Power Connectors
Port Description Connector Speed/Protocol
Ports 0/0-0/4 Enables direct connections to workstations or a LAN
connection through a switch or hub. This
connection also allows you to manage the device
through a Telnet session or the WebUI.
USB Enables a 1.1 USB connection with the system. N/A 12M (full speed) or 1.5M (low speed)
Console Enables a serial connection with the system. Used
for terminal-emulation connectivity to launch
Command Line Interface (CLI) sessions.
AUX Enables a backup serial Internet connection through
an external modem.
Mini PIM
ADSL 2/2+ Enables an Internet connection through an ADSL
data link.
V.92 Modem Enables a primary or backup Internet or untrusted
network connection to an Internet Service Provider
(ISP).
T1 Enables a connection to the T1 line to the untrusted
network.
E1 Enables a connection to the E1 line to the untrusted
network.
ISDN Enables the ISDN line to be used as the untrust or
backup interface.
Antenna A & B
(SSG 20-WLAN)
Enables a direct connection to workstations in the
vicinity of a wireless radio connection.
RJ-45 10/100 Mbps Ethernet
Autosensing duplex and auto MDI/MDIX
RJ-45 9600 bps/ RS-232C serial
RJ-45 9600 bps — 115 Kbps/ RS-232C serial
RJ-11
(Annex A)
RJ-45
(Annex B)
ANSI T1.413 Issue 2 (Annex A only)
ITU G.992.1 (G.dmt)
ITU G.992.2 (G.lite) (Annex A only)
ITU G.992.3 (ADSL2)
ITU G.992.5 (ADSL2+)
RJ-11 9600 bps — 115 Kbps/ RS-232 Serial
autosensing duplex and polarity
RJ-45
RJ-45
RJ-45 B-channels at 64 Kbps
RPSMA 802.11a (54 Mbps on 5GHz radio band)
802.11b (11 Mbps on 2.4GHz radio band)
802.11g (54 Mbps on 2.4GHz radio band)
802.11 superG (108 Mbps on 2.4GHz
radio band)
2 Port and Power Connectors
Front Panel
System Status LEDs
This section describes the following elements on the front panel of an SSG 20
device:
System Status LEDs
Port Descriptions
Mini Physical Interface Module Port Descriptions
The system status LEDs display information about critical device functions. Figure 1
illustrates the position of each status LED on the system dashboard. The WLAN
LEDs are only present on the SSG 20-WLAN device.
Figure 1: Status LED
12
POWER
STATUS
PIM 1
PIM 2
802.11a
b/g
WLAN
When the system powers up, the POWER LED changes from off to blinking green
and the STATUS LED changes in the following sequence: red, green, blinking green.
Startup takes approximately 2 minutes to complete. If you want to turn the system
off and on again, we recommend waiting a few seconds between shutting it down
and powering it back up. Table 2 provides the name, color, status, and description of
each system status LED.
Table 2: LED Descriptions
Name Color Status Description
POWER Green On steadily Indicates that the system is receiving power
Off Indicates that the system is not receiving
power
Red On steadily Indicates that the device is not operating
normally
Off Indicates that the device is operating
normally
STATUS Green On steadily Indicates that the system is booting up or
performing diagnostics
Blinking Indicates that the device is operating
normally
Red Blinking Indicates that there was an error detected
PIM 1 Green On steadily Indicates that the mini PIM is functioning
Blinking Indicates that the mini PIM is passing traffic
Off Indicates that the mini PIM not operational
Front Panel 3
SSG 20 Hardware Installation and Configuration Guide
Name Color Status Description
PIM 2 Green On steadily Indicates that the mini PIM is functioning
WLAN
802.11a Green On steadily Indicates that a wireless connection is
b/g Green On steadily Indicates that a wireless connection is
Blinking Indicates that the mini PIM is passing traffic
Off Indicates that the mini PIM not operational
established but there is no link activity
Blinking slowly Indicates that a wireless connection is
established. The baud rate is proportional to
the link activity
Off Indicates that there is no wireless connection
established
established but there is no link activity
Blinking slowly Indicates that a wireless connection is
established. The baud rate is proportional to
the link activity
Off Indicates that there is no wireless connection
established
4 Front Panel
Port Descriptions
This section explains the purpose and function of the following:
Ethernet Ports on page 5
Console Port on page 5
AUX Port on page 5
Ethernet Ports
Five 10/100 Ethernet ports provide LAN connections to hubs, switches, local servers,
and workstations. You can also designate an Ethernet port for management traffic.
The ports are labeled 0/0 through 0/4. For the default zone bindings for each
Ethernet port, see “Default Device Settings” on page 21.
When configuring one of the ports, reference the interface name that corresponds
to the location of the port. From left to right on the front panel, the interface names
for the ports are named ethernet0/0 through ethernet0/4.
Figure 2 displays the location of the LEDs on each Ethernet port.
Figure 2: Activity Link LEDs
TX/RX
LINK
Table 3 describes the Ethernet port LEDs.
Table 3: LAN Port LEDs
Name Color Status Description
LINK Green On steadily
Off
TX/RX Green Blinking
Off
Port is online
Port is offline
Traffic is passing through. The baud rate is
proportional to the link activity.
Port might be on but is not receiving data
Console Port
The Console port is an RJ-45 serial port wired as DCE that can used for local
administration. An RJ-45 to DB-9 adapter is supplied.
See “Connectors” on page III for the RJ-45 connector pinouts.
AUX Port
The auxiliary (AUX) port is an RJ-45 serial port wired as a DTE that you can connect
to a modem to allow remote administration. We do not recommend using this port
for regular remote administration. The AUX port is typically assigned to be the
backup serial interface. The baud rate is adjustable from 9600 bps to 115200 bps
and requires hardware flow control.
Front Panel 5
SSG 20 Hardware Installation and Configuration Guide
See “Connectors” on page III for the RJ-45 connector pinouts.
Mini Physical Interface Module Port Descriptions
Each mini physical interface module (PIM) supported on a device has the following
components:
One cable connector port—Accepts a network media connector. Figure 3 shows
the available mini PIMs. You can install up to two mini PIMs in a device.
Figure 3: Mini PIMs on the SSG 20
ADSL 2/2+
ADSL 2/2+
ISDN (BRI )
T1
E1
V.92
SYNC
TX/RX
SYNC
TX/RX
Channel B1
Channel B2
ALARM
LOOP BACK
CD
ALARM
LOOP BACK
CD
TX/RX
CD
ADSL2/2+ Annex B
ADSL2/2+ Annex A
ISDN BRI
T1
E1
V.92
Two to three status LEDs—Indicates port status. Table 4 describes the meaning
of the LED states.
6 Front Panel
Table 4: Mini PIM LED States on the SSG 20
Type Name Color State Description
ADSL 2/2+
(Annex A
and B)
ISDN (BRI) CH B1 Green On steadily Indicates that B-Channel 1 is active
T1/E1 ALARM Yellow On steadily Indicates that there is a local or remote
V.92 CD Green On steadily Indicates that the link is active
SYNC Green On steadily Indicates that the ADSL interface is trained
Blinking Indicates training is in progress
Off Interface is idle
TX/RX Green Blinking Indicates that traffic is passing through
Off Indicates that no traffic passing through
Off Indicates that B-Channel 1 is not active
CH B2 Green On steadily Indicates that B-Channel 2 is active
Off Indicates that B-Channel 2 is not active
alarm; device has detected a failure
Off Indicates that there are no alarms or failures
LOOP BACK Yellow On steadily Indicates that a loopback or line state is
detected
Off Indicates that the loopback is not active
CARRIER
DETECT
TX/RX Green Blinking Indicates that traffic is passing through
Green On steadily Indicates a carrier was detected and the
internal DSU/CSU in the mini PIM is
communicating with another DSU/CSU
Off Indicates that carrier detect is not active
Off Indicates that the serial interface is not in
service
Off Indicates that no traffic is passing through
NOTE: Mini PIMs are not hot-swappable. They must be installed in the front panel slots
before the system is booted up.
Front Panel 7
SSG 20 Hardware Installation and Configuration Guide
Back Panel
This section describes the back panel of an SSG 20 device:
“Power Adapter” on this page
“Radio Transceiver,” on this page
“Grounding Lug,” on this page
“Antennae Types” on page 9
“Universal Serial Bus (USB) Host Module” on page 9
Figure 4: Back Panel of an SSG Device
Power Adapter
Radio Transceiver
Antenna A Antenna B
grounding lug
USB host module
Power
adapter
The POWER LED on the front panel of a device either glows green or is off. Green
indicates correct function, and off indicates power adapter failure.
The SSG 20-WLAN contains two wireless connectivity radio transceivers, which
support 802.11a/b/g standards. The first transceiver (WLAN 0) uses the 2.4 GHz
radio band, which supports the 802.11b standard at 11 Mbps, the 802.11g standard
at 54 Mbps, and 802.11 SuperG standard at 108 Mbps. The second radio transceiver
(WLAN 1) uses the 5 GHz radio band, which supports the 802.11a standard at 54
Mbps. The two radio transceivers can work simultaneously, For information on
configuring the wireless radio band, see “Wireless Network Configuration” on
page 28.
Grounding Lug
8 Back Panel
A one-hole grounding lug is provided on the back of the chassis to connect the
device to earth ground (see Figure 4).
To ground the device before connecting power, you connect a grounding cable to
earth ground and then attach the cable to the lug on the rear of the chassis.
Antennae Types
The SSG 20-WLAN device supports three types of custom-built radio antennae:
Diversity antennae — The diversity antennae provide 2dBi omnidirectional
coverage and a fairly uniform level of signal strength within the area of
coverage and are suitable for most installations. this type of antennae are
shipped with the device.
External omnidirectional antenna — The external antenna provides 2dBi
omnidirectional coverage. Unlike diversity antennae, which function as a pair,
an external antenna operates to eliminate an echo effect that can sometimes
occur from slightly delayed characteristics in signal reception when two are in
use.
External directional antenna — The external directional antenna provides
2dBi unidirectional coverage and is well suited for such places as hallways and
outer walls (with the antenna facing inward).
Universal Serial Bus (USB) Host Module
The slot labeled USB on the back panel of an SSG 20 device implements a host-only
USB 1.1 host module for a USB device adapter or USB flash key, as defined in the
CompactFlash Specification published by the CompactFlash Association. When the
USB storage device is installed and configured, it automatically acts as a secondary
storage device.
The USB host module allows file transfers, such as device configurations, user
certifications, and update version images between an external USB flash key and
the internal flash storage located in the security device. The USB host module
supports USB 2.0 specification at either low-speed (1.5M) or full-speed (12M) file
transfer.
To use a USB flash key to transfer files between the device, perform the following
steps:
1. Insert the USB flash key into the USB host module on the security device.
2. Save the files from the USB flash key to the internal flash storage on the device
with the save { software | config | image-key } from usb filename to flash CLI
command.
3. Before removing the USB flash key, stop the host module with the exec
usb-device stop CLI command.
4. It is now safe to remove the USB flash key.
If you want to delete a file from the USB flash key, use the delete file usb:/filename
CLI command.
If you want to view the saved file information on the USB flash key or internal flash
storage, use the get file info CLI command.
Back Panel 9
SSG 20 Hardware Installation and Configuration Guide
10 Back Panel
Chapter 2
Installing and Connecting the Device
This chapter describes how to install an SSG 20 device in a standard 19-inch
equipment rack and connect cables and power to the device. Topics in this chapter
include:
“Before You Begin” on this page
“Equipment Rack Installation” on page 12
“Connecting the Interface Cable to a Device” on page 12
“Connecting the Power” on page 13
“Connect the Device to a Network” on page 13
NOTE: For safety warnings and instructions, please refer to the Juniper Networks Security
Products Safety Guide. Before working on any equipment, you should be aware of
the hazards involved with electrical circuitry and be familiar with standard
practices for preventing accidents.
Before You Begin
The location of the chassis, the layout of the equipment rack, and the security of
your wiring room are crucial for proper system operation.
WARNING: To prevent abuse and intrusion by unauthorized personnel, install an
SSG 20 device in a secure environment.
Observing the following precautions can prevent shutdowns, equipment failures,
and injuries:
Before installation, always check that the power supply is disconnected from
any power source.
Ensure that the room in which you operate the device has adequate air
circulation and that the room temperature does not exceed 104× F (40× C).
Before You Begin 11
SSG 20 Hardware Installation and Configuration Guide
Do not place the device in an equipment rack frame that blocks an intake or
exhaust port. Ensure that enclosed racks have fans and louvered sides.
Correct these hazardous conditions before any installation: moist or wet floors,
leaks, ungrounded or frayed power cables, or missing safety grounds.
Equipment Rack Installation
You can front-mount an SSG 20 device into a standard 19-inch equipment rack. The
device is shipped with mounting brackets installed.
To front-mount an SSG 20 device, you need a number 2 phillips screwdriver (not
provided) and four screws that are compatible with the equipment rack (not
provided).
To install an SSG 20 device onto a rack:
1. Align the rack mount ears to the device.
2. Place the screws in the holes and use a phillips screwdriver to secure them.
3. Mount the device on the rack with the provided screws.
4. Plug the power supply into the power outlet.
Connecting the Interface Cable to a Device
To connect the interface cable to a device, perform the following steps:
1. Have ready a length of the type of cable used by the interface.
2. Insert the cable connector into the cable-connector port on the interface
faceplate.
3. Arrange the cable as follows to prevent it from dislodging or developing stress
points:
a. Secure the cable so that it is not supporting its own weight as it hangs to
the floor.
b. Place any excess cable out of the way in a neatly coiled loop.
12 Equipment Rack Installation
c. Use fasteners to maintain the shape of the cable loops.
Connecting the Power
To connect the power to a device, perform the following steps:
1. Plug the DC connector end of the power cable into the DC power receptacle on
the back of the SSG device.
2. Plug the AC adapter end of the power cable into an AC power source.
WARNING: We recommend using a surge protector for the power connection.
Connect the Device to a Network
An SSG 20 device provides firewall and general security for networks when it is
placed between internal networks and the untrusted network. This section
describes the following:
Connecting the device to an untrusted network
Connecting the device mini PIMs to an untrusted Network
Connecting the device to an internal network or workstation
Connect an SSG 20 Device to an Untrusted Network
You can connect your SSG 20 device to the untrusted network in one of the
following ways:
Connecting Ethernet Ports
Connecting Serial (AUX/Console) Ports
Connecting Ethernet Ports
To establish a high-speed connection, connect the provided Ethernet cable from the
Ethernet port marked 0/0 on an SSG 20 device to the external router. This Ethernet
port (0/0) is assigned to the ethernet0/0 interface, which is by default bound to the
Untrust security zone. The device autosenses the correct speed, duplex, and
MDI/MDIX settings.
Connecting Serial (AUX/Console) Ports
You can connect to the untrusted network with an RJ-45 straight through serial
cable and external modem.
WARNING: Make sure that you do not inadvertently connect the Console, AUX, or
Ethernet ports on the device to the telephone outlet.
Connecting the Power 13
SSG 20 Hardware Installation and Configuration Guide
Connect an SSG Device to an Untrusted Network
Figure 5 shows basic network cabling connections for a device. This figure shows
two blank PIMs and the 10/100 Ethernet ports are cabled as follows:
The port labeled 0/0 (ethernet0/0 interface) is connected to the untrust
network.
The port labeled 0/1 (ethernet0/1 interface) is connected to a switch that
connects workstations on the DMZ LAN.
The ports labeled 0/2 through 0/4 (ethernet0/2 through ethernet0/4 interfaces)
are connected to a switch that connects workstations to the trusted network.
The console port is connected to a serial terminal for management access.
Figure 5: Basic Networking Example
Internet
untrust interface
SSG 20
12
802.11a
POWER
PIM 1
PIM 2
b/g
STATUS
WLAN
AUX
AUX
LINK
10/100
10/100
10/100
10/100
0/0
0/0
0/0
10/100
0/0
0/0
bgroup0interface (ethernet0/2 —ethernet0/4)
console
DMZ Zone
Trust Zone
Connect Mini PIMs to an Untrusted Network
This section explains how to connect the device mini PIMs to an untrusted network.
Connecting the ADSL2/2+ Mini PIM
Connect the provided ADSL cable from the ADSL2/2+ mini PIM to your telephone
outlet. The ADSL port on the Annex A version of the device uses an RJ-11 connector,
while the Annex B version uses an RJ-45 connector. In the case of Annex B models,
the cable you connect from the ADSL port to the telephone outlet is identical in
appearance and wiring to a straight through 10 Base-T Ethernet cable.
14 Connect the Device to a Network
Connecting Splitters and Microfilters
A signal splitter divides the telephone signal into low-frequency voice signals for
voice calls and high-frequency data signals for data traffic. Your service provider
usually installs the splitter as part of the equipment that connects your site
telephone lines to the provider network.
There are also splitters that you may be able to install yourself, depending upon
your service-provider equipment. If you are installing such a splitter yourself,
connect the ADSL cable from the device and the telephone line to the appropriate
connectors (for example, “data” or “voice”) on the splitter. You connect the other
end of the splitter to the telephone outlet.
You may need to install a microfilter on each telephone, fax machine, answering
machine, or analog modem that connects to the ADSL line. The microfilter filters
out high-frequency noise on the telephone line. You install the microfilter on the
telephone line between the telephone, fax machine, answering machine, or analog
modem and the voice connector on the splitter.
Figure 6 shows an example of a microfilter and a splitter that you install on your
site. (You must obtain the appropriate microfilters or splitters from your service
provider.)
Figure 6: Installing a Microfilter and Splitter on Your Network
New Graphic Needed
DATA VOICE
ADSL 2/2+
SYNC
TX/RX
TX/RX
10/100
10/100
0/0
0/1
0/2
LINK
10/100
10/100
10/100
0/4
0/5
SSG 20
ADSL 2+
12
POWER
PIM 1
802.11a
PIM 2
STATUS
b/g
WLAN
SYNC
TXRX
CONSOLEAUX
Connecting Other Mini PIMs
To connect the mini PIMs to a device, perform the following steps:
1. Have ready a length of the type of cable used by the interface.
2. Insert the cable connector into the cable-connector port on the interface
faceplate.
3. Arrange the cable as follows to prevent it from dislodging or developing stress
points:
a. Secure the cable so that it is not supporting its own weight as it hangs to
the floor.
b. Place any excess cable out of the way in a neatly coiled loop.
c. Use fasteners to maintain the shape of the cable loops.
To configure the ISDN, E1, T1, or V.92 Mini PIM, see “Mini PIM Configuration” on
page 30.
Connect the Device to a Network 15
SSG 20 Hardware Installation and Configuration Guide
Connect the Device to an Internal Network or a Workstation
You can connect your local area network (LAN) or workstation with the Ethernet
and/or wireless interfaces.
Connecting Ethernet Ports
An SSG 20 device contains five Ethernet ports. You can use one or more of these
ports to connect to LANs through switches or hubs. You can also connect one or all
of the ports directly to workstations, eliminating the need for a hub or switch. You
can use either crossover or straight through cables to connect the Ethernet ports to
other devices.
Connecting the Wireless Antennae
If you are using the wireless interface, you need to connect the provided antennae
on the device. If you have the standard 2dB omnidirectional antennae, use screws to
attach them onto the posts marked A and B at the back of the device. Bend each
antenna at their elbows, making sure not to put pressure on the bulkhead
connectors.
bulkhead connectorbulkhead connector
If you are using the optional external antenna, follow the connection instructions
for that antenna.
16 Connect the Device to a Network
Chapter 3
Configure the Device
The ScreenOS software is preinstalled on an SSG 20 device. When the device is
powered on, it is ready to be configured. While the device has a default factory
configuration that allows you to initially connect to the device, you need to perform
further configuration for your specific network requirements.
This chapter contains the following sections:
“Access the Device” on page 18
“Default Device Settings” on page 21
“Basic Device Configuration” on page 23
“Wireless Configuration” on page 27
“Mini PIM Configuration” on page 30
“Basic Firewall Protections” on page 37
“Verify External Connectivity” on page 38
“Reset the Device to Factory Defaults” on page 38
NOTE: After you configure a device and verify connectivity through the remote network,
you must register your product at www.juniper.net/support/ so certain ScreenOS
services, such as Deep Inspection Signature Service, can be activated on the
device. After registering your product, use the WebUI to obtain the subscription for
the service. For more information about registering your product and obtaining
subscriptions for specific services, refer to the Fundamentals volume of the
Concepts & Examples ScreenOS Reference Guide.
17
SSG 20 Hardware Installation and Configuration Guide
Access the Device
You can configure and manage a device in several ways:
Console: The Console port on the device allows you to access the device
through a serial cable connected to your workstation or terminal. To configure
the device, you enter ScreenOS Command Line Interface (CLI) commands on
your terminal or in a terminal-emulation program on your workstation.
WebUI: The ScreenOS WebUI is a graphical interface available through a Web
browser. To initially use the WebUI, the workstation on which you run the Web
browser must be on the same subnetwork as the device. You can also access
the WebUI through a secure server using secure sockets layer
HTTP (S-HTTP).
Telnet/SSH: Telnet and Secure Shell (SSH) are applications that allows you to
access devices through an IP network. To configure the device, you enter
ScreenOS CLI commands in a Telnet session from your workstation. Fore more
information, See the Administration volume of the Concepts & Examples
Reference Guide for ScreenOS 5.4.0.
(SSL) using secure
NetScreen-Security Manager: NetScreen-Security Manager is a Juniper
Networks enterprise-level management application that enables you to control
and manage Juniper Networks firewall/IPSec VPN and SSG devices. For
instructions on how to manage your device with NetScreen-Security Manager,
refer to the NetScreen-Security Manager Administrator’s Guide.
Using a Console Connection
NOTE: Use a RJ-45 CAT5 serial cable with a male RJ-45 connector to plug into the Console
port on the devices.
To establish a console connection, perform the following steps:
1. Plug the female end of the supplied DB-9 adapter into the serial port of your
workstation. (Be sure that the DB-9 is inserted properly and secured.)
18 Access the Device
Figure 7: DB-9 Adapter
RJ-45 Jack
RJ-45 cable
DB-9 adapter
2. Plug the male end of the RJ-45 CAT5 serial cable into the Console port on the
SSG 20. (Be sure that the other end of the CAT5 cable is inserted properly and
secured in the DB-9 adapter.)
3. Launch a serial terminal-emulation program on your workstation. The required
settings to launch a console session with the devices are as follows:
Baud rate: 9600
Parity: None
Data bits: 8
Using the WebUI
Stop bit: 1
Flow Control: None
4. If you have not yet changed the default user name and password, enter
netscreen in both the login and password prompts. (Use lowercase letters only.
The login and password fields are both case-sensitive.)
For information on how to configure the device with the CLI commands, see
the Concepts and Examples Reference Guide for ScreenOS 5.4.0.
5. (Optional) By default, the console times out and terminates automatically after
10 minutes of idle time. To remove the timeout, enter
set console timeout 0.
To use the WebUI, you must initially be on the same subnetwork as the device. To
access the device with the WebUI, perform the following steps:
1. Connect your workstation to the 0/2 - 0/4 port (bgroup0 interface in the Trust
zone) on the device.
2. Ensure that your workstation is configured for DHCP or is statically configured
with an IP address in the 192.168.1.0/24 subnet.
3. Launch your browser, enter the IP address for the bgroup0 interface (the default
IP address is 192.168.1.1/24), then press Enter.
Access the Device 19
SSG 20 Hardware Installation and Configuration Guide
The WebUI application displays the login prompt as shown in Figure 8.
Figure 8: WebUI Login Prompt
4. If you have not yet changed the default user name and password, enter
netscreen in both the login and password prompts. (Use lowercase letters only.
The login and password fields are both case-sensitive.)
NOTE: If you decide to use the Initial Configuration Wizard to configure your device, see
“Using the Initial Configuration Wizard” on page I.
Using Telnet
To establish a Telnet connection, perform the following steps:
1. Connect your workstation to the 0/2 - 0/4 port (bgroup0 interface in the Trust
zone) on the device.
2. Ensure that your workstation is configured for DHCP or is statically configured
with an IP address in the 192.168.1.0 subnet.
3. Start a Telnet client application to the IP address for the bgroup0 interface (the
default IP address is 192.168.1.1). For example, enter
telnet 192.168.1.1.
The Telnet application displays the login prompt.
4. If you have not yet changed the default user name and password, enter
netscreen in both the login and password prompts. (Use lowercase letters only.
The login and password fields are both case-sensitive.)
5. (Optional) By default, the console times out and terminates automatically after
10 minutes of idle time. To remove the timeout, enter
set console timeout 0.
20 Access the Device
Default Device Settings
This section describes the default settings and operation of an SSG 20 device.
Table 5 describes the default zone bindings for ports on the devices.
Table 5: Default Physical Interface to Zone Bindings
Port Label Interface Zone
Console N/A N/A
AUX serial0/0 Null
10/100 Ethernet ports:
0/0 ethernet0/0 Untrust
0/1 ethernet0/1 DMZ
bgroup0
0/2
0/3
0/4
WAN Mini PIM ports: (x = mini PIM slot, 1 or 2)
ADSL2/2+ (Annex A) adsl(x/0) Untrust
ADSL2/2+ (Annex B) adsl(x/0) Untrust
T1 serial(x/0) Untrust
E1 serial(x/0) Untrust
ISDN bri(x/0) Untrust
V. 92 serial(x/0) Null
bgroup0 (default IP address is
192.168.1.1/24)
ethernet0/2
ethernet0/3
ethernet0/4
Tru st
A bridge group, bgroup, is designed to allow network users to switch between
wired/wireless traffic without having to reconfigure or reboot the device. By default,
the ethernet0/2—ethernet0/6 interfaces, labeled as port 0/2—0/6 on the device, are
grouped together as the bgroup0 interface, have the IP address 192.168.1.1/24, and
are bound to the Trust security zone. You can configure up to four bgroups.
If you want to set an Ethernet or wireless interface into a bgroup, you must first
make sure that the Ethernet or wireless interface is in the Null security zone.
Unsetting the Ethernet or wireless interface that is in a bgroup places the interface
in the Null security zone. Once assigned to the Null security zone, the Ethernet
interface can be bound to a security zone and assigned a different IP address.
To unset ethernet0/3 from bgroup0 and assign it to the Trust zone with a static IP
address of 192.168.3.1/24, do the following:
unset interface bgroup0 port ethernet0/3
set interface ethernet0/3 zone trust
set interface ethernet0/3 ip 192.168.3.1/24
save
Default Device Settings 21
SSG 20 Hardware Installation and Configuration Guide
Table 6: Wireless and Logical Interface Bindings
SSG 20-WLAN Interface Zone
Wireless interface
Specifies a wireless interface, which is
configurable to operate on 2.4G and/or
5G radio.
Logical Interfaces
Layer2 interface vlan1 specifies the logical interfaces
Tunnel interfaces tunnel.n specifies a logical tunnel
You can change the default IP address on the bgroup0 interface to match the
addresses on your LAN and WLAN. For configuring a wireless interface to a bgroup,
see “Wireless Configuration” on page 27.
wireless0/0 (default IP address is
192.168.2.1/24)
wireless0/1-0/3 Null
used for management and VPN traffic
termination while the device is in
Transparent mode.
interface. This interface is for VPN
traffic.
Trus t
N/A
N/A
NOTE: The bgroup interface does not work in transparent mode when it contains a
wireless interface.
For addition bgroup information and examples, refer to the Concepts & Examples
ScreenOS Reference Guide.
There are no other default IP addresses configured on other Ethernet or wireless
interfaces on a device; you need to assign IP addresses to the other interfaces,
including the WAN interfaces.
22 Default Device Settings
Basic Device Configuration
This section describes optional configuration:
“Changing the Root Admin Name and Password” on this page
“Setting the Date and Time” on page 24
“Administrative Access” on page 25
“Management Services” on page 25
“Host and Domain Name” on page 25
“Default Route” on page 26
“Management Interface Address” on page 26
“Backup Untrust Interface Configuration” on page 26
Changing the Root Admin Name and Password
The root admin user has complete privileges to configure an SSG 20 device. We
recommend that you change the default root admin name (
password (
netscreen) immediately.
netscreen) and
NOTE:
WebUI
Configuration > Admin > Administrators > Edit (for the
Administrator Name): Enter the following, then click OK:
Administrator Name:
Old Password:
New Password:
Confirm New Password:
Passwords are not displayed in the WebUI.
CLI
set admin name name
set admin password pswd_str
save
netscreen
Basic Device Configuration 23
SSG 20 Hardware Installation and Configuration Guide
Setting the Date and Time
The time set on an SSG 20 device affects events such as the setup of VPN tunnels.
The easiest way to set the date and time on the device is to use the WebUI to
synchronize the device system clock with the workstation clock.
WebUI
1. Configuration > Date/Time: Click the Sync Clock with Client button.
A pop-up message prompts you to specify if you have enabled the daylight
saving time option on your workstation clock.
2. Click Yes to synchronize the system clock and adjust it according to
daylight saving time or click No to synchronize the system clock without
adjusting for daylight saving time.
You can also use the
manually enter the date and time for the SSG device.
Bridge Group Interfaces
By default, the SSG 20 device has Ethernet interfaces ethernet0/2—ethernet0/4
grouped together in the Trust security zone. Grouping interfaces sets interfaces in
one subnet. You can unset an interface from a group and assign it to a different
security zone. Interfaces must be in the Null security zone before they can be
assigned to a group. To place a grouped interface in the Null security zone, use the
unset interface interface port interface CLI command.
The SSG 20-WLAN devices allow Ethernet and wireless interfaces to be grouped
under one subnet.
NOTE:
Only wireless and Ethernet interfaces can be set in a bridge group.
To configure a group with Ethernet and wireless interfaces, do the following:
unset interface bgroup0 port ethernet0/3
unset interface bgroup0 port ethernet0/4
set interface bgroup1 port ethernet0/3
set interface bgroup1 port ethernet0/4
set interface bgroup1 port wireless0/2
set interface bgroup1 zone DMZ
set interface bgroup1 ip 10.0.0.1/24
save
set clock CLI command in a Telnet or Console session to
24 Basic Device Configuration
Administrative Access
By default, anyone in your network can manage a device if they know the login and
password. You can configure the device to be managed only from a specific host on
your network:
WebUI
CLI
Management Services
ScreenOS provides services for configuring and managing the SSG device, such as
SNMP, SSL, and SSH, which you can enable on a per-interface basis.
WebUI
CLI
Configuration > Admin > Permitted IPs: Enter the following, click Add:
IP Address/Netmask: ip_addr/mask
set admin manager-ip ip_addr/mask
save
Network > Interfaces > Edit (for ethernet0/0): Under Management Services,
select or clear the management services you want to use on the interface, then
click Apply.
set interface ethernet0/0 manage web
unset interface ethernet0/0 manage snmp
save
Host and Domain Name
The domain name defines the network or subnetwork that the device belongs to,
while the hostname refers to a specific device. The hostname and domain name
together uniquely identify the device in the network.
WebUI
CLI
Network > DNS > Host: Enter the following, then click Apply:
Host Name: name
Domain Name: name
set hostname name
set domain name
save
Basic Device Configuration 25
SSG 20 Hardware Installation and Configuration Guide
Default Route
The default route is a static route used to direct packets addressed to networks that
are not explicitly listed in the routing table. If a packet arrives at the device with an
address that the device does not have routing information for, the device sends the
packet to the destination specified by the default route.
WebUI
Network > Routing > Routing Entries > New: Enter the following, then click
OK:
Network Address/Netmask: 0.0.0.0/0.0.0.0
Gateway: (select)
Interface: serial1/0 (select)
Gateway IP Address: ip_addr
CLI
set route 0.0.0.0/0 interface serial1/0 gateway ip_addr
save
Management Interface Address
The Trust interface has the default IP address 192.168.1.1/24 and is configured for
management services. If you connect the 0/2—0/4 port on the device to a
workstation, you can configure the device from a workstation in the 192.168.1.1/24
subnetwork using a management service such as Telnet.
You can change the default IP address on the trust interface. For example, you
might want to change the interface to match IP addresses that already exist on your
LAN.
Backup Untrust Interface Configuration
The SSG 20 device allows you to configure a backup interface for untrust failover. To
set a backup interface for untrust failover, perform the following steps:
1. Set the backup interface in the Null security zone with the unset interface
interface [ port interface ] CLI command.
2. Bind the backup interface to the same security zone as the primary interface
with the set interface interface zone zone_name CLI command.
NOTE: The primary and backup interfaces must be in the same security zone. One
primary interface has only one backup interface, and one backup interface has
only one primary interface.
26 Basic Device Configuration
To set the ethernet0/4 interface as the backup interface to the ethernet0/0 interface,
do either of the following:
WebUI
CLI
Wireless Configuration
This section provides information for configuring the wireless interface on the
SSG 20-WLAN device. To use the wireless local area network (WLAN) capabilities on
the device, you must configure at least one Service Set Identifier (SSID) and bind it
to a wireless interface.
NOTE: If you are operating the SSG 20-WLAN device in a country other than the United
States or Japan, then you must use the set wlan country-code command before a
WLAN connection can be established. This command sets the selectable channel
range and transmit power level.
Network > Interfaces > Backup > Enter the following, then click Apply.
Primary: ethernet0/0
Backup: ethernet0/4
Type: track-ip (select)
unset interface bgroup0 port ethernet0/4
set interface ethernet0/4 zone untrust
set interface ethernet0/0 backup interface ethernet0/4 type track-ip
save
Figure 9 shows the default configuration for the SSG 20-WLAN device.
Wireless Configuration 27
SSG 20 Hardware Installation and Configuration Guide
Figure 9: Default SSG 20-WLAN Configuration
Internet
wireless0/0 (192.168.2.1/24)
SSG 20
12
802.11a
POWER
PIM 1
PIM 2
b/g
STATUS
WLAN
AUX
AUX
LINK
10/100
10/100
10/100
10/100
0/0
0/0
0/0
10/100
0/0
0/0
bgroup0 (ethernet0/2 — ethernet0/4)
Console
DMZ Zone
Trust Zone
By default, the wireless0/0 interface is configured with the IP address of
192.168.2.1/24. All wireless clients that need to connect to in the Trust zone must
have an IP address in the wireless subnetwork. You can also configure the device to
automatically assign IP addresses in the 192.168.2.1/24 subnetwork to your devices
with DHCP.
By default, the wireless0/1 - wireless0/3 interfaces are defined as Null and do not
have IP addresses assigned to them. If you want to use any of the other wireless
interfaces, you must configure an IP address for it, assign an SSID to it, and bind it
to a security zone.
For more information about WLANs, refer to “Wireless Interface” in the Concepts
and Examples ScreenOS Reference Guide.
Wireless Network Configuration
28 Wireless Configuration
Wireless networks consist of names referred to as Service Set Identifiers (SSIDs).
Specifying SSIDs allows you to have multiple wireless networks reside in the same
location without interfering with each other. An SSID name can have a maximum of
32 characters. If a space is part of the SSID name string, then the string must be
enclosed with quotation marks. Once the SSID name is set, more SSID attributes
can be configured.
The SSG 20-WLAN device allows you to create up to 16 SSIDs, but only 4 of them
can be used simultaneously. You can configure the device to use the 4 SSIDs on
either one of the transceivers or split the use on both. For example, 3 SSIDs
assigned to WLAN 0 and 1 SSID assigned to WLAN 1. Use the set interface
wireless_interface wlan { 0 | 1 | both } CLI command to set the radio transceivers
on the SSG 20-WLAN device.
To set the SSID name netscreen open, allow the SSID to be open to all users, bind
the SSID to the wireless0/0 interface, and use both radio transceivers, do either of
the following:
WebUI
Wireless > SSID > New: Enter the following, then click OK:
SSID: netscreen open
Authentication: open
Encryption: none
Wireless Interface Binding: wireless0/0 (select)
CLI
set ssid name “netscreen open”
set ssid “netscreen open” authentication open encryption none
set ssid “netscreen open” interface wireless0/0
set interface wireless0/0 wlan both
set interface wireless0/0 zone trust
save
exec wlan reactivate
You can set an SSID to operate in the same subnet as the wired subnet. This action
allows clients to work in either interface without having to reconnect in another
subnet.
To set up a wireless interface for basic configuration, do the following:
set wlan country-code { code_id }
set interface wireless_interface ip ip_addr/netmask
set ssid name name_str
set ssid name_str authentication auth_type encryption encryption_type
set ssid name_str key-id number
set ssid name_str interface interface
set interface wireless_interface wlan both
save
exec wlan reactivate
NOTE:
To set an ethernet and wireless interface to the same bridge group interface, do the
following:
set interface bgroup_name port wireless_interface
set interface bgroup_name port ethernet_interface
Bgroup_name can be bgroup0—bgroup3.
Ethernet_interface can be ethernet0/0—ethernet0/4.
Wireless_interface can be wireless0/0—wireless0/3.
Wireless Configuration 29
SSG 20 Hardware Installation and Configuration Guide
Authentication and Encryption
The SSG 20-WLAN supports the following authorization and encryption methods:
Authentication Encryption
Open Allows any wireless client to access the device
Shared-key WEP shared-key
WPA-PSK AES/TKIP with Pre-shared key
WPA AES/TKIP with key from RADIUS server
WPA2-PSK 802.11i compliant with a pre-shared key
WPA2 802.11i compliant with a RADIUS server
WPA-Auto-PSK Allows WPA and WPA2 type with pre-shared key
WPA-Auto Allows WPA and WPA2 type with RADIUS server
802.1x WEP with key from RADIUS server
Once you have set an SSID to the wireless0/0 interface, you can access the device
using the default wireless0/0 interface IP address in the steps provided “Access the
Device” on page 18. Refer to the Concepts & Examples ScreenOS Reference Guide for
configuration examples, SSID attributes, and CLI commands relating to wireless
security configurations.
Mini PIM Configuration
This section explains how to configure the mini physical interface modules (PIMs):
“Asymmetrical DSL (ADSL) 2/2+ Interface” on this page
“The ISDN Interface” on page 34
“The T1 Interface” on page 35
“The E1 Interface” on page 36
“The V.92 Modem Interface” on page 37
Asymmetrical DSL (ADSL) 2/2+ Interface
Your network uses the ADSL2/2+ interface adslx/0, with x representing the mini
PIM slot (1 or 2), on the device to connect to the service provider’s network through
an Asynchronous Transfer Mode (ATM) virtual circuit. You can configure additional
virtual circuits by creating ADSL2/2+ subinterfaces. For more information, see
“Virtual Circuits to an ADSL2/2+ Interface” on page 31.
30 Mini PIM Configuration
In the WebUI, navigate to the Network > Interfaces > List page to see a list of the
current interfaces on the device. If you are using a Telnet or Console session, enter
the get interface CLI command. You should see that the adslx/0 interface is bound
to the Untrust zone.
If you are using the ADSL2/2+ interface to connect to the service provider’s
network, you must configure the adsl(x/0) interface. To do this, you must obtain the
following information from your service provider:
Virtual Path Identifier and Virtual Channel Identifier (VPI/VCI) values
ATM Adaptation Layer 5 (AAL5) multiplexing method, which can be one of the
following:
Virtual Circuit-based multiplexing, in which each protocol is carried over a
separate ATM virtual circuit
Logical Link Control (LLC) encapsulation, which allows several protocols to
be carried on the same ATM virtual circuit (the default multiplexing
method)
Username and password assigned by the service provider for connection to the
service provider’s network using either Point-to-Point Protocol over Ethernet
(PPPoE) or Point-to-Point Protocol over ATM (PPPoA)
Authentication method, if any, provided for the PPPoE or PPPoA connection
Optionally, a static IP address and netmask value for your network
Virtual Circuits to an ADSL2/2+ Interface
To add virtual circuits, you create subinterfaces to the ADSL2/2+ interface. You can
create up to 10 ADSL2/2+ subinterfaces. For example, to create a new subinterface
named adsl1/0.1 bound to the user-defined zone named Untrust:
WebUI
Network > Interfaces > New ADSL Sub-IF: Enter the following, click Apply:
Interface Name: adsl1/0.1
VPI/VCI: 8/35
Zone Name: Untrust (select)
CLI
set interface adsl 1/0.1 pvc 0 35 zone Untrust
save
You need to configure an ADSL 2/2+subinterface in the same way as the main
ADSL2/2+ interface, including setting the VPI/VCI values, as described in
“Connecting the ADSL2/2+ Mini PIM” on page 12. You configure an ADSL2/2+
subinterface independently of the main ADSL2/2+ interface; that is, you can
configure a different multiplexing method, VPI/VCI, and PPP client on the
subinterface than on the main ADSL2/2+ interface. You can also configure a static
IP address on a subinterface, even if the main ADSL2/2+ interface does not have a
static IP address. Note that a subinterface and the main ADSL2/2+ interface have to
use the same VPI/VCI values if one interface is configured for PPPoA and the other
for PPPoE and they both use LLC multiplexing.
Mini PIM Configuration 31
SSG 20 Hardware Installation and Configuration Guide
VPI/VCI and Multiplexing Method
Your service provider assigns a VPI/VCI pair for each virtual circuit connection. For
example, you may receive the VPI/VCI pair 1/32, which means a VPI value of 1 and
a VCI value of 32. These values must match the values that the service provider has
configured on the subscriber’s side of the Digital Subscriber Line Access Multiplexer
(DSLAM).
To configure the VPI/VCI pair 1/32 on the adsl1/0 interface:
WebUI
Network > Interfaces > Edit (for the adsl1/0 interface): Enter 1/32 in the
VPI/VCI field, click Apply.
CLI
set interface adsl1/0 pvc 1 32
save
By default, the device uses LLC-based multiplexing for each virtual circuit. To
configure the VPI/VCI 1/32 on the adslx/0 interface and use LLC encapsulation on
the virtual circuit:
WebUI
Network > Interfaces > Edit (for the adsl1/0 interface): Enter the following,
click Apply:
VPI/VCI: 1 / 32
Multiplexing Method: LLC (selected)
CLI
set interface adsl1/0 pvc 1 32 mux llc
save
PPPoE or PPPoA
An SSG 20 device includes both PPPoE and PPPoA clients to connect to the service
provider’s network over the ADSL link. PPPoE is the most common form of ADSL
encapsulation and is intended for termination on each host on your network.
PPPoA is used primarily for business class-service as PPP sessions can be
terminated on the device. To allow the device to connect to the service provider’s
network, you need to configure the username and password assigned by the service
provider. The configuration for PPPoA is similar to the configuration for PPPoE.
32 Mini PIM Configuration
NOTE: The device supports only one PPPoE session on each virtual circuit.
To configure the user name roswell and password area51 for PPPoE and bind the
PPPoE configuration to the adsl1/0 interface:
WebUI
Network > PPP > PPPoE Profile> New: Enter the following, click OK:
PPPoE Instance: poe1
Bound to Interface: adsl1/0 (select)
Username: roswell
Password: area51
CLI
set pppoe name poe1 username roswell password area51
set pppoe name poe1 interface adsl1/0
save
There are other PPPoE or PPPoA parameters that you can configure on the device,
including method of authentication (by default, the device supports either
Challenge Handshake Authentication Protocol or Password Authentication Protocol),
idle timeout (default is 30 minutes), and so on. Ask your service provider if there
are additional PPPoE or PPPoA parameters that you need to configure to enable
proper communications with the service provider’s server.
Static IP Address and Netmask
If your ISP gave you a specific, fixed IP address and netmask for your network, then
configure the IP address and netmask for the network and the IP address of the
router port connected to the device. You need to also specify that the device is to
use the static IP address. (Typically, the device acts as a PPPoE or PPPoA client and
receives an IP address for the ADSL interface through negotiations with the PPPoE
or PPPoA server.)
You need to configure a PPPoE or PPPoA instance and bind it to the adsl1/0
interface, as described in “PPPoE or PPPoA” on page 32. Make sure that you select
Obtain IP using PPPoE or Obtain IP using PPPoA and the name of the PPPoE or
PPPoA instance.
To configure the static IP address 1.1.1.1/24 for the network:
WebUI
Network > Interfaces > List > Edit (for the adsl1/0 interface): Enter the
following, click Apply:
IP Address/Netmask: 1.1.1.1/24
Static IP: (select)
CLI
set interface adsl1/0 ip 1.1.1.1/24
set pppoe name poe1 static-ip
save
or
set interface adsl1/0 ip 1.1.1.1/24
set pppoa name poa1 static-ip
save
Mini PIM Configuration 33
SSG 20 Hardware Installation and Configuration Guide
To use Domain Name System (DNS) for domain name and address resolution, the
computers in your network need to have the IP address of at least one DNS server.
If the device receives an IP address for the ADSL2/2+ interface through PPPoE or
PPPoA, then it also automatically receives IP addresses for the DNS server(s). If the
computers in your network obtain their IP address(es) from the DHCP server on the
device, then the computers also obtain these DNS server addresses.
If you assign a static IP address to the ADSL2/2+ interface, then the service
provider must give you the IP address(es) of the DNS server(s). You can either
configure the DNS server address on each computer in your network or configure
the DHCP server on the Trust zone interface so that it provides the DNS server
address to each computer.
To configure the DHCP server on the bgroup0 interface to provide the DNS server
address 1.1.1.152 to computers in your network:
WebUI
Network > DHCP > Edit (for the bgroup0 interface) > DHCP Server: Enter
1.1.1.152 for DNS1, click Apply.
The ISDN Interface
CLI
set interface bgroup0 dhcp server option dns1 1.1.1.152
save
For more information about configuring the ADSL and ADSL2/2+ interfaces, refer
to the Concepts & Examples ScreenOS Reference Guide.
Integrated Services Digital Network (ISDN) is a set of standards for digital
transmission over different media created by the Consultative Committee for
International Telegraphy and Telephone (CCITT) and International
Telecommunications Union (ITU). As a dial-on-demand service, it has fast call setup
and low latency as well as the ability to carry high-quality voice, data, and video
transmissions. ISDN is also a circuit-switched service that can be used on both
multipoint and point-to-point connections. ISDN provides a service router with a
backup connection for network interfaces. The ISDN interface is usually configured
as the backup interface of the Ethernet interface to access external networks.
To configure the ISDN interface, do either of the following:
WebUI
Network > Interfaces > Edit (bri1/0): Enter or select the applicable option
value, then click OK.
BRI Mode: Dial Using BRI
Primary Number: 123456
WAN Encapsulation: PPP
PPP Profile: isdnprofile
34 Mini PIM Configuration
CLI
set interface bri1/0 dialer-enable
set interface bri1/0 primary-number "123456"
set interface bri1/0 encap ppp
The T1 Interface
set interface bri1/0 ppp profile isdnprofile
save
For more information on how to configure the ISDN interface, refer to the Concepts
& Examples ScreenOS Reference Guide.
To configure the ISDN interface as the backup interface, see “Backup Untrust
Interface Configuration” on page 26.
The T1 interface is a basic Physical Layer protocol used by the Digital Signal level 1
(DS-1) multiplexing method in North America. A T1 interface operates at a bit-rate
of 1.544 Mbps and can support 24 DS0 channels.
The devices support the following T1 DS-1 standards:
ANSI TI.107, TI.102
GR 499-core, GR 253-core
AT&T Pub 54014
ITU G.751, G.703
To configure the T1 mini PIM, do either of the following:
WebUI
Network > Interfaces > Edit (interface) > WAN: Enter or select the applicable
option value, click OK.
WAN Configure: main link
WAN Encapsulation: cisco-hdlc
Zone Name: untrust
IP Address/Netmask 172.18.1.1/24
CLI
set interface serial1/0 encap cisco-hdlc
set interface serial1/0 ip 172.18.1.1/24
For information on how to configure the T1 interface, refer to the Concepts &
Examples ScreenOS Reference Guide.
Mini PIM Configuration 35
SSG 20 Hardware Installation and Configuration Guide
The E1 Interface
The E1 interface is a standard wide area network (WAN) digital communications
format designed to operate over copper facilities at a rate of 2.048 Mbps. Widely
used outside North America, E1 is a basic time-division multiplexing scheme used
to carry digital circuits.
The devices support the following E1 standards:
ITU-T G.703
ITU-T G.751
ITU-T G.775
To configure the E1 mini PIM, do either of the following:
WebUI
Network > Interfaces > Edit (interface) > WAN: Enter or select the applicable
option value, click OK.
WAN Configure: main link
WAN Encapsulation: PPP
Binding a PPP Profile: junipertest
Zone Name: untrust
IP Address/Netmask: 172.18.1.1/24
CLI
set interface serial1/0 encapsulation ppp
set ppp profile “junipertest” static-ip
set ppp profile “junipertest” auth type chap
set ppp profile “junipertest” auth local-name “juniper”
set ppp profile “junipertest” auth secret “password”
set interface serial1/0 ppp profile “junipertest”
set interface serial1/0 ip 172.18.1.1/24
set user “server” type wan
set user “server” password “server”
For information on how to configure the E1 interface, refer to the Concepts &
Examples ScreenOS Reference Guide.
36 Mini PIM Configuration
The V.92 Modem Interface
The V.92 interface provides an internal modem to establish a PPP connection to an
ISP. You can configure the serial interface as a primary or backup interface, which is
used in case of interface failover.
NOTE: The V.92 interface does not work in transparent mode.
To configure the V.92 interface, do either of the following:
WebUI
Network > Interfaces > Edit (for serial1/0) > Modem: Enter the following,
click OK:
CLI
set interface serial1/0 modem idle-time 20
set interface serial1/0 modem settings mod1 init-strings AT&FS7=255S32=6
set interface serial1/0 modem settings mod1 active
For information on how to configure the V.92 modem interface, refer to the
Concepts & Examples ScreenOS Reference Guide.
Modem Name: mod1
Init String: AT&FS7=255S32=6
Status: Enable (select)
Inactivity Timeout: 20
Basic Firewall Protections
The devices are configured with a default policy that permits workstations in the
Trust zone of your network to access any resource in the Untrust security zone,
while outside computers are not allowed to access or start sessions with your
workstations. You can configure policies that direct the device to permit outside
computers to start specific kinds of sessions with your computers. For information
about creating or modifying policies, refer to the Concepts and Examples ScreenOS
Reference Guide.
The SSG 20 device provides various detection methods and defense mechanisms to
combat probes and attacks aimed at compromising or harming a network or
network resource:
ScreenOS SCREEN options secure a zone by inspecting, and then allowing or
denying, all connection attempts that require crossing an interface to that zone.
For example, you can apply port scan protection on the Untrust zone to stop a
source from an remote network from trying to identify services to target for
further attacks.
The device applies firewall policies, which can contain content filtering and
intrusion detection and prevention (IDP) components, to the traffic that passes
the SCREEN filters from one zone to another. By default, no traffic is permitted
to pass through the device from one zone to another. To permit traffic to cross
the device from one zone to another, you must create a policy that overrides the
default behavior.
Basic Firewall Protections 37
SSG 20 Hardware Installation and Configuration Guide
To set ScreenOS SCREEN options for a zone:
WebUI
Screening > Screen: Select the zone to which the options apply. Select the
SCREEN options that you want, then click Apply:
CLI
set zone zone screen option
save
For more information about configuring the network security options available in
ScreenOS, see the Attack Detection and Defense Mechanisms volume in the Concepts
& Examples ScreenOS Reference Guide.
Verify External Connectivity
To verify that workstations in your network can access resources on the Internet,
start a browser from any workstation in the network and enter the following URL:
www.juniper.net.
Reset the Device to Factory Defaults
If you lose the admin password, you can reset the device to its default settings. This
action destroys any existing configurations but restores access to the device.
WARNING: Resetting the device deletes all existing configuration settings and
disables all existing firewall and VPN services.
You can restore the device to its default settings in one of the following ways:
Using a Console connection. For further information, see the Administration
chapter in the Administration volume of the Concepts and Examples ScreenOS
Reference Guide.
Using the reset pinhole on the back panel of the device, as described in the next
section.
The Reset Pinhole
You can reset the device and restore the factory default settings by pressing the
reset pinhole. To perform this operation, you need to either view the device status
LEDs on the front panel or start a Console session as described in Using a Console
Connection on page 18.
To use the reset pinhole to reset and restore the default settings, perform the
following steps:
38 Verify External Connectivity
1. Locate the reset pinhole on the rear panel. Using a thin, firm wire (such as a
paper clip), push the pinhole for four to six seconds and then release.
The STATUS LED blinks red. A message on the Console states that erasure of the
configuration has started and the system sends an SNMP/SYSLOG alert.
2. Wait for one to two seconds.
After the first reset, the STATUS LED blinks green; the device is now waiting for
the second reset. The Console message now states that the device is waiting for
a second confirmation.
3. Push the reset pinhole again for four to six seconds.
The Console message verifies the second reset. The STATUS LED glows red for
one-half second and then returns to the blinking green state.
The device then resets to its original factory settings. When the device resets,
the STATUS LED glows red for one-half second and then glows green. The
Console displays device bootup messages. The system generates SNMP and
SYSLOG alerts to configured SYSLOG or SNMP trap hosts.
After the device has rebooted, the Console displays the login prompt for the
device. The STATUS LED blinks green. The login for username and password is
netscreen.
If you do not follow the complete sequence, the reset process cancels without any
configuration change and the console message states that the erasure of the
configuration is aborted. The STATUS LED returns to blinking green. If the device
did not reset, an SNMP alert is sent to confirm the failure.
Reset the Device to Factory Defaults 39
SSG 20 Hardware Installation and Configuration Guide
40 Reset the Device to Factory Defaults
Chapter 4
Servicing the Device
This chapter describes service and maintenance procedures for an SSG 20 device. It
contains the following sections:
“Tools and Parts Required” on this page
“Replacing a Physical Interface Module” on page 41
“Memory Upgrade” on page 44
NOTE: For safety warnings and instructions, refer to the Juniper Networks Security
Products Safety Guide. The instructions in the guide warn you about situations that
could cause bodily injury. Before working on any equipment, you should be aware
of the hazards involved with electrical circuitry and be familiar with standard
practices for preventing accidents.
Tools and Parts Required
To replace a component on an SSG 20 device, you need the following tools and
parts:
Electrostatic bag or antistatic mat
Electrostatic discharge (ESD) grounding wrist strap
Phillips screwdriver, 1/8-inch
Replacing a Physical Interface Module
Both SSG 20 models have two slots in the front panel for wide area network
physical interface modules (WAN mini PIMs). Mini PIMs in an SSG 20 device can be
installed and replaced. The SSG device must be powered off before you can remove
install a mini PIM.
CAUTION: Make sure the power is off to the device when removing a mini PIM.
They are not hot-swappable.
Tools and Parts Required 41
SSG 20 Hardware Installation and Configuration Guide
Removing a Blank Faceplate
To maintain proper airflow through the SSG device, blank faceplates should remain
over slots that do not contain mini PIMs. Do not remove a blank faceplate unless
you are installing a mini PIM in its empty slot.
To remove a blank faceplate, do the following:
1. Place an electrostatic bag or antistatic mat on a flat, stable surface to place the
mini PIM.
2. Attach an ESD grounding strap to your bare wrist and connect the strap to the
ESD point on the chassis or to an outside ESD point if the SSG device is
disconnected from earth ground.
3. Unplug the power adapter from the device. Verify that the POWER LED is off.
4. Loosen and remove the screws on each side of the faceplate using a 1/8’ slotted
screwdriver.
Removing a Mini PIM
5. Remove the faceplate, then place the faceplate in the electrostatic bag or on the
antistatic mat.
Mini PIMs are installed in the front panel of the SSG device. A mini PIM weighs less
than .2 lb. (106g).
To remove a mini PIM, do the following:
1. Place an electrostatic bag or antistatic mat on a flat, stable surface to place the
mini PIM.
2. Attach an ESD grounding strap to your bare wrist and connect the strap to the
ESD point on the chassis or to an outside ESD point if the SSG device is
disconnected from earth ground.
3. Unplug the power adapter from the device. Verify that the POWER LED is off.
4. Label the cables connected to the mini PIM so that you can later reconnect each
cable to the correct mini PIM.
5. Disconnect the cables from the mini PIM.
6. If necessary, arrange the cables to prevent them from dislodging or developing
stress points:
7. Loosen and remove the screws on each side of the mini PIM faceplate using a
42 Replacing a Physical Interface Module
a. Secure the cables so that it they are not supporting their own weight as
they hang to the floor.
b. Place any excess cables out of the way in neatly coiled loops.
c. Use fasteners to maintain the shape of the cable loops.
1/8” slotted screwdriver.
Installing a Mini PIM
8. Grasp the screws on each side of the mini PIM faceplate and slide it out of the
device. Place the mini PIM in the electrostatic bag or on the antistatic mat.
9. If you are not reinstalling a mini PIM into the emptied slot, install a blank
faceplate over the slot to maintain proper airflow.
Figure 10: Removing/Installing a Mini PIM
Graphic needed.
To install a mini PIM:
1. Attach an ESD grounding strap to your bare wrist and connect the strap to the
ESD point on the chassis or to an outside ESD point if the SSG device is
disconnected from earth ground.
2. Unplug the power adapter from the device. Verify that the POWER LED is off.
3. Grasp the screws on each side of the mini PIM faceplate and align the notches
in the connector at the rear of the mini PIM with the notches in the mini PIM
slot in the SSG device. Then slide the mini PIM in until it lodges firmly in the
device.
CAUTION: Slide the mini PIM straight into the slot to avoid damaging the
components on the mini PIM.
4. Tighten the screws on each side of the mini PIM faceplate using a 1/8” slotted
screwdriver.
5. Insert the appropriate cables into the cable connectors on the mini PIM.
6. If necessary, arrange the cables to prevent them from dislodging or developing
stress points:
a. Secure the cables so that they are not supporting their own weight as they
hang to the floor.
b. Place any excess cables out of the way in neatly coiled loops.
c. Use fasteners to maintain the shape of the cable loops.
Replacing a Physical Interface Module 43
SSG 20 Hardware Installation and Configuration Guide
7. Unplug the power adapter from the device. Verify that the POWER LED glows
steadily green after you press the power button.
8. Verify that the mini PIM status LED glows steadily green to confirm that the
mini PIM is online.
Memory Upgrade
You can upgrade an SSG 20 device with a single 128 MB SODIMM DRAM memory
module to a 256 MB module.
To upgrade the memory on an SSG 20 device, perform the following steps:
1. Attach an ESD grounding strap to your bare wrist and connect the strap to the
ESD point on the chassis, or to an outside ESD point if the device is
disconnected from earth ground.
2. Press and release the power button to power off the device. Verify that the
POWER LED blinks and then turns off.
3. Use a phillips screwdriver to remove the screws from the top panel of the
chassis. The screws are located at the rear and sides of the panel. Keep the
screws nearby for use when closing the chassis later.
4. Grip the rear edge of the top panel, lift it up, then remove it.
5. Locate the memory module slot.
Figure 11: Memory Module Slots
Graphic needed.
6. Release the 128 MB SODIMM DRAM memory module by pressing your thumbs
downward on the locking tabs on each side of the module so that the tabs
swivel away from it.
44 Memory Upgrade
7. Grip the long edge of the memory module and slide it out. Set it aside.
8. Insert one of the 256 MB SODIMM DRAM memory modules into the slot from
which you just removed the 128 MB SODIMM DRAM memory module. Exerting
even pressure with both thumbs upon the upper edge of the module, press the
module downward until the locking tabs click into position.
9. To replace the top panel on the chassis, set the front edge of the top panel into
the groove that runs along the top front edge of the chassis. Then lower the top
panel onto the chassis.
10. Use the phillips screwdriver to tighten the screws you removed earlier, securing
the top panel to the chassis.
Memory Upgrade 45
SSG 20 Hardware Installation and Configuration Guide
46 Memory Upgrade
Appendix A
Specifications
This appendix provides general system specifications for an SSG 20 device.
SSG 20 Physical Specifications
Table 1: SSG 20 Physical Specifications
Description Value
Chassis
dimensions
Device weight 1.53kg (3.3 lbs) without PIMs installed.
ISDN PIM 70g
ADSL Annex A PIM 106g
ADSL Annex B PIM 106g
T1 PIM 75g
E1 PIM 75g
V.92 PIM 79g
294mm X 194.8mm X 44mm (11.5 inches X 7.7 inches X 2 inches)
Electrical Specification
Table 2: SSG 20 Electrical Specifications
Item Specification
DC input voltage 12 V
DC system current
rating
3.34A - 4.16A
SSG 20 Physical Specifications I
SSG 20 Hardware Installation and Configuration Guide
Environmental
Table 3: SSG 20 Environmental Tolerance
Description Value
Altitude No performance degradation to 6,600 ft (2,000 m)
Relative humidity Normal operation ensured in relative humidity range of 5% to 90%
Temperature Normal operation ensured in temperature range of 32°F (0°C) to 104°F
Certifications
noncondensing
(40°C)
Non-operating storage temperature in shipping carton: -40°F (-40°C) to
158°F (70°C)
Safety
EMC (Emissions)
EMC Immunity
CAN/CSA-C22.2 No. 60950-1-03/UL 60950-1 Safety of Information Technology
Equipment
EN 60950-1 (2000) Third Edition Safety of Information Technology Equipment
IEC 60950-1 (1999) Third Edition Safety of Information Technology Equipment
FCC Part 15 Class B (USA)
EN 55022 Class B (Europe)
AS 3548 Class B (Australia)
VCCI Class B (Japan)
EN 55024
EN-61000-3-2 Power Line Harmonics
EN-61000-3-3 Power Line Harmonics
II Environmental
EN-61000-4-2 ESD
EN-61000-4-3 Radiated Immunity
EN-61000-4-4 EFT
EN-61000-4-5 Surge
EN-61000-4-6 Low Frequency Common Immunity
EN-61000-4-11 Voltage Dips and Sags
European Telecommunications Standards Institute (ETSI)
ETSI EN-3000386-2: Telecommunication Network Equipment. Electromagnetic
Compatibility Requirements; (equipment category -Other than
telecommunication centers)
T1 Interface
FCC Part 68 - TIA 968
Industry Canada CS-03
UL 60950-1 Applicable requirements for TNV circuit with outside plant lead
connection
Connectors
Table 4 lists the RJ-45 connector pinouts for the Console and Modem ports:
Table 4: Console and Modem Port Connector Pinouts
RJ-45 Name I/O Description DB-9
1RTS OutO Request to Send8
2 DTR Out O Data Terminal Ready 6
3TxD O Transmit Data2
4 GND N/A Chassis Ground 5
5 GND N/A Chassis Ground 5
6 RxD 1 Receive Data 3
7 DSR 1 Data Set Ready 4
8 CTS 1 Clear to Send 7
Connectors III
SSG 20 Hardware Installation and Configuration Guide
IV Connectors
Appendix A
Initial Configuration Wizard
This appendix provides detailed information about the Initial Configuration Wizard
(ICW) for an SSG 20 device.
Using the Initial Configuration Wizard
After you have physically connected your device to the network, you can use the
ICW to configure the interfaces that are installed on your device.
This section describes the following ICW windows:
1. Rapid Deployment Window on page II
2. Administrator Login Window on page II
3. WLAN Access Point Window on page II
4. Physical Ethernet Interface Window on page III
5. ADSL2/2+ Interface Window on page IV
6. T1 Interface Windows on page V
7. E1 Interface Windows on page X
8. ISDN Interface Windows on page XII
9. V.92 Modem Interface Window on page XIV
10. Untrust Zone (Ethernet0/0 Interface) Window on page XV
11. DMZ Zone (Ethernet0/1 Interface) Window on page XVI
12. Trust Zone (Ethernet0/2 Interface) Window on page XVI
13. Wireless Interface (wireless0/0) in Trust Zone Window on page XVII
14. Interface Summary Window on page XVIII
15. Physical Ethernet DHCP Interface Window on page XVIII
16. Wireless DHCP Interface Window on page XIX
I
SSG 20 Hardware Installation and Configuration Guide
17. Confirmation Window on page XIX
1. Rapid Deployment Window
Table 1: Rapid Deployment Window
If your network uses NetScreen-Security Manager, you can use a Rapid Deployment
configlet to automatically configure the SSG device. Obtain a configlet from your
Security Manager administrator, select the Yes option, select the Load Configlet
from: option, browse to the file location, then click Next. The configlet sets up the
device for you.
If you want to bypass the configuration wizard and go directly to the WebUI, select
the last option, then click Next.
If you are not using a configlet to configure the device and want to use the
configuration wizard, select the first option, then click Next. The ICW welcome
screen appears. Click Next. The Administrator Login Window appears.
2. Administrator Login Window
Enter a new administrator login name and password, then Click Next.
Figure 1: Admin Login Window
II
3. WLAN Access Point Window
If you are using the device in the WORLD regulatory domain, you must choose a
country code. Select the appropriate option, then click Next.
Figure 2: Wireless Access Point County Code Window
4. Physical Ethernet Interface Window
On the interface-to-zone bindings screen, you set the interface to which you want to
bind the Untrust security zone. Bgroup0 is prebound to the Trust security zone.
Ethernet0/1 is bound to the DMZ security zone but is optional.
Figure 3:
After binding an interface to a zone, you can configure the interface. Depending on
which interfaces you have installed on your device, mini PIM-specific configuration
windows are displayed. To continue configuring your device with the ICW, click
Next.
III
SSG 20 Hardware Installation and Configuration Guide
5. ADSL2/2+ Interface Window
If you have the ADSL2/2+ mini PIM installed on your device, the following window
is displayed. After you have entered the necessary information, click Next.
NOTE: If you have two ADSL2/2+ mini PIMs installed on your device and you select the
Multi-link option, you will see two Physical Layer tabs.
Figure 4: ADSL2/2+ Interface Configuration Window
Table 2:
Field Description
Information from Service Provider:
VPI/VCI VPI/VCI values to identify the permanent virtual circuit.
Multiplexing Method ATM multiplexing method (LLC is the default).
RFC1483 Protocol Mode Protocol Mode setting.
Operating Mode Operating mode for the physical line (auto is the default)
IP configuration settings
Select Dynamic IP via DHCP to enable the device to receive an
IP address for ADSL interface from an ISP.
Select Dynamic IP via PPPoA to enable the device to act as a
PPPoA client. Enter the Username and Password assigned by the
service provider.
Select Dynamic IP via PPPoE to enable the device to act as a
PPPoE client. Enter the Username and Password assigned by the
service provider.
Select Static IP to assign a unique and fixed IP address to the
ADSL interface. Enter the interface IP address, Netmask, and
Gateway (the gateway address is the IP address of the router port
connected to the device).
If you do not know what these settings are, please refer to the Common Settings for
Service Providers document that came with the service provider device.
IV
6. T1 Interface Windows
If you have the T1 mini PIM installed on your device and select the Frame Relay
option, the following windows are displayed:
“T1 Physical Layer Tab Window” on page V
“T1 Frame Relay Tab Window” on page VII
NOTE: If you have two T1 mini PIMs installed on your device and you select the
Multi-link option, you will see two Physical Layer tabs.
After you have entered the necessary information, click Next.
Figure 5: T1 Physical Layer Tab Window
V
SSG 20 Hardware Installation and Configuration Guide
Table 3: Field Description for T1 Physical Layer Tab
Field Description
Clocking Sets the transmit clock on the interface.
Line Buildout Sets the distance at which an interface drives a line. Default
Line Encoding Sets the line encoding format on the interface.
Bye Encoding Sets the byte encoding on the T1 interface to use 7-bits per
Frame Checksum Sets the size of checksum. Default is 16.
Framing Mode Sets the framing format. Default is extended mode.
Idle Cycles Flag Sets the value that the interface transmits during idle cycles.
Start/End Flags Sets the transmission of start and end flags to either filler or
Invert data checkbox Enables inverted transmission of unused data bits.
Loopback Respond checkbox Enables loopback between the T1 interface and the remote
Time Slots Sets the use of time slots on a T1 interface. Default is 0, all 24
setting is 0~132 feet.
Auto Mark Inversion
8-bits zero suppression
byte or 8-bits per byte. Default is 8-bits.
Default setting is 0x7E.
0x7E (flags)
0xFF (ones)
shared. The default is filler.
channel service unit (CSU).
time slots used.
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Figure 6: T1 Frame Relay Tab Window
Table 4: Field Description for T1 Frame Relay Tab
Field Description
No-Keepalives checkbox Enables no-keepalives
Type Sets the frame relay LMI type
ANSI: American National Standards Institute supports data rates
up to 8 Mbps downstream and 1 Mbps upstream.
ITU: International Telecommunications Union supports data rates
of 6.144 Mbps downstream and 640 kbps upstream.
Interface Name Sets the subinterface name
Inverse ARP Enables inverse Address Resolution Protocol (ARP) for the
subinterface
Frame Relay DLCI Assigns a DLCI to the subinterface
Interface IP Sets the IP address for the subinterface
Netmask Sets the netmask for the subinterface
Gateway Sets the gateway for the subinterface
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SSG 20 Hardware Installation and Configuration Guide
If you have the T1 mini PIM installed on your device and select the PPP option, the
following windows are displayed:
“PPP Option with PPP Tab Window” on page VIII
“PPP Option with Peer User Tab Window” on page VIII
After you have entered the necessary information, click Next.
Figure 7: PPP Option with PPP Tab Window
Table 5: Field Description for PPP Option with PPP Tab
Field Description
PPP Profile Name Sets the name of the PPP profile
Authentication Sets the authentication type
Local User Sets the name of the local user
Password Sets the password for the local user
Static IP checkbox Enables a static IP address
Interface IP Sets the serialx/0 interface IP address
Netmask Sets the serialx/0 netmask
Gateway Sets the serialx/0 gateway address
Figure 8: PPP Option with Peer User Tab Window
Table 6: Field Description for PPP Option with Peer User Tab
Field Description
Peer User Sets the name of the peer user
Password Sets the password for the peer user specified in the Peer User text field
Status Enables or disables PPP.
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If you have the T1 mini PIM installed on your device and select the Cisco HDLC
option, the following window is displayed.
Figure 9: Cisco HDLC Option with Cisco HDLC Tab Window
Table 7: Field Description for Cisco HDLC Option
Field Description
Interface IP Sets the IP address for the T1 Cisco HDLC interface
Netmask Sets the netmask for the T1 Cisco HDLC interface
Gateway Sets the gateway for the T1 Cisco HDLC interface
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SSG 20 Hardware Installation and Configuration Guide
7. E1 Interface Windows
If you have the E1 mini PIM installed on your device and select the Frame Relay
option, the following windows are displayed:
“E1 Physical Layer Tab Window” on page X
“E1 Frame Relay Tab Window” on page XI
NOTE: If you have two E1 mini PIMs installed on your device and you select the
Multi-link option, you will see two Physical Layer tabs.
Figure 10: E1 Physical Layer Tab Window
Table 8: Field Description for E1 Physical Layer Tab
Field Description
Clocking Sets the transmit clock on the interface
Frame Checksum Sets the size of checksum. Default is 16
Framing Mode Sets the framing format. Default is without CRC4
Idle Cycles Flag Sets the value that the interface transmits during idle cycles. Default
Start/End Flags Sets the transmission of start and end flags to either filler or shared.
Invert data checkbox Enables inverted transmission of unused data bits
Time slots Sets the use of time slots on a T1 interface. Default is 0, all 32 time
setting is 0x7E
0x7E (flags)
0xFF (ones)
The default is filler
slots used
X
Figure 11: E1 Frame Relay Tab Window
Table 9: Field Descriptions for the Frame Relay Tab
Field Description
No-Keepalives checkbox Enables no-keepalives
Type Sets the frame relay LMI type
ANSI: American National Standards Institute supports data rates
up to 8 Mbps downstream and 1 Mbps upstream.
ITU: International Telecommunications Union supports data
rates of 6.144 Mbps downstream and 640 kbps upstream.
Interface Name Sets the subinterface name
Inverse ARP checkbox Enables inverse Address Resolution Protocol (ARP) for the
Frame Relay DLCI Assigns a DLCI to the subinterface
Interface IP Sets the IP address for the subinterface
Netmask Sets the netmask for the subinterface
Gateway Sets the gateway for the subinterface
subinterface
To configure the E1 interface with PPP options, see “PPP Option with PPP Tab
Window” on page VIII.
To configure the E1 interface with the Cisco HDLC, see “Cisco HDLC Option with
Cisco HDLC Tab Window” on page IX.
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SSG 20 Hardware Installation and Configuration Guide
8. ISDN Interface Windows
If you have the ISDN mini PIM installed on your device, a physical layer tab window
similar to the following is displayed.
NOTE: If you have two ISDN mini PIMs installed on your device and you select the
Multi-link option, you will see two Physical Layer tabs.
Figure 12: ISDN Physical Layer Tab Window
Table 10: Field Description for ISDN Physical Layer Tab
Field Description
Switch Type Sets the service provider switch type:
att5e - At&T 5ESS
ntdms100 - Nortel DMS 100
ins-net - NTT INS-Net
etsi - European variants
ni1 - National ISDN-1
SPID1 Service Provider ID, usually a seven-digit telephone number with
some optional numbers. Only the DMS-100 and NI1 switch
types require SPIDs. The DMS-100 switch type has two SPIDs
assigned, one for each B-channel.
SPID2 Back up service provider ID.
TEI Negotiation Specifies when to negotiate TEI, either at startup or on the first
call. Typically this setting is used for ISDN service offerings in
Europe and connections to DMS-100 switches that are designed
to initiate TEI negotiation.
Calling Number The ISDN network billing number. TR6 switch type cannot use
this field.
T310 Value The timeout value (in seconds) before sending a DISC to the
network. Default value is 10.
Sending Complete checkbox Enables sending complete information to outgoing setup
message. Usually only used in Hong Kong and Taiwan.
XII
If you have the ISDN mini PIM installed on your device, you will see the Leased Line
Mode and Dial Using BRI checkboxes. Selecting either or none displays a window
similar to the following.
Figure 13: ISDN Licensed-Line, Leased-Line, and Dial Using BRI Tabs Window
Table 11: Field Descriptions for the ISDN Licensed-Line, Leased-Line, and Dial Using BRI
Tabs
Field Description
PPP Profile Name Sets a PPP profile name to the ISDN interface
Authentication Sets the PPP authentication type:
Any
CHAP: Challenge Handshake Authentication Protocol
PAP: Password Authentication Protocol
None
Local User Sets the local user
Password Sets the password for the local user
Static IP checkbox Enables a static IP address for the interface
Interface IP Sets the interface IP address
Netmask Sets the netmask
Gateway Sets the gateway address
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SSG 20 Hardware Installation and Configuration Guide
9. V.92 Modem Interface Window
If you have the V.92 mini PIM installed on your device, the following window is
displayed:
Figure 14: V.92 Modem Interface Window
Table 12: Field Descriptions for V.92 Modem
Field Description
Modem Name Sets the name for the modem interface
Init Strings Sets the initialization string for the modem
ISP Name Assigns a name to the ISP
Primary Number Specifies the phone number to access the ISP
Alternative Number (optional) Specifies an alternative phone number to access the ISP if the
Login Name Sets the login name for the ISP account
Password Sets the password for the login name
primary number does not connect
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10. Untrust Zone (Ethernet0/0 Interface) Window
The Untrust zone interface can have a static IP address or a dynamic IP address
assigned via DHCP or PPPoE. Insert the necessary information, then click Next.
Figure 15: ethernet0/0 Interface Window
Table 13: Field Descriptions for Ethernet0/0 Interface
Field Description
Dynamic IP via DHCP Enables the device to receive an IP address for the Untrust zone
Dynamic IP via PPPoE Enables the device to act as a PPPoE client, receiving an IP address
Static IP Assigns a unique and fixed IP address to the Untrust zone interface.
interface from an ISP.
for the Untrust zone interface from an ISP. Enter the username and
password assigned by the ISP.
Enter the Untrust zone interface IP, Netmask, and gateway.
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SSG 20 Hardware Installation and Configuration Guide
11. DMZ Zone (Ethernet0/1 Interface) Window
The DMZ zone interface can have a static IP address or a dynamic IP address
assigned via DHCP. Insert the necessary information, then click Next.
Figure 16: Ethernet0/1 Interface Window
Table 14: Field Descriptions for the Ethernet0/1 Interface
Field Description
Dynamic IP via DHCP Enables the device to receive an IP address for the DMZ zone
Static IP Assigns a unique and fixed IP address to the DMZ zone interface.
interface from an ISP.
Enter the DMZ zone interface IP and netmask.
12. Trust Zone (Ethernet0/2 Interface) Window
The Trust zone interface can have a static IP address or a dynamic IP address
assigned via DHCP. Insert the desired information, then click Next.
The default Interface IP is 192.168.1.1 with a netmask of 255.255.255.0 or 24.
Figure 17: Trust Zone (Ethernet0/2 Interface) Window
Table 15: Field Descriptions for the Trust Zone Interface
Field Description
Dynamic IP via DHCP Enables the device to receive an IP address for the Trust zone
Static IP Assigns a unique and fixed IP address to the Trust zone interface.
interface from an ISP.
Enter the Trust Zone Interface IP and Netmask.
XVI
13. Wireless Interface (wireless0/0) in Trust Zone Window
You must set a Service Set Identifier (SSID) before the wireless0/0 interface can be
activated. For detailed instructions about configuring your wireless interface(s), see
the Concepts and Examples ScreenOS Reference Guide.
Figure 18: Wireless0/0 Interface Window
Table 16: Field Descriptions for Wireless0/0 Interface
Field Description
Wlan Mode Sets the WLAN radio mode:
802.11a
802.11b/g
802.11a/b/g
SSID Sets the SSID name.
Authentication and Encryption Sets the WLAN interface authentication and encryption.
Open authentication, the default, allows anyone to access
the device. There is no encryption for this authentication
option.
WPA Pre-Shared Key authentication sets the Pre-Shared Key
(PSK) or passphrase that must be entered when accessing
wireless connectivity. You can choose to enter a HEX or an
ASCII value for the PSK. A HEX PSK must be a 256-bit (64
text character) HEX value. An ASCII passphrase must be 8 to
63 text characters. You must select Temporal Key Integrity
Protocol (TKIP) or Advanced Encryption Standard (AES)
encryption type for this option, or select Auto to allow either
option.
Interface IP Sets the WLAN interface IP address.
Netmask Sets the WLAN interface netmask.
After you have configured the WAN interfaces with, you will see the Interface
Summary Window. Check your interface configuration, then click Next when ready
to proceed. The Physical Ethernet DHCP Interface Window appears.
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SSG 20 Hardware Installation and Configuration Guide
14. Interface Summary Window
Select Yes, to enable your device to assign IP addresses to your wired network via
DHCP. Enter the IP address range that you want your device to assign to clients
using your network.
15. Physical Ethernet DHCP Interface Window
Select Yes, to enable your device to assign IP addresses to your wireless network via
DHCP. Enter the IP address range that you want your device to assign to clients
using your network.
XVIII
16. Wireless DHCP Interface Window
Confirm your device configuration and change as needed. Click Next to save, reboot
the device, then run the configuration.
17. Confirmation Window
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SSG 20 Hardware Installation and Configuration Guide
XX
Index
A
AAL5 multiplexing 31
adding virtual circuit 31
ADSL
configuring interface 30
connecting the cable 13
connecting the port 13
Annex A 13
Annex B 13
antennae 16
ATM Adaptation Layer 5 31
B
backup interface to Untrust zone 26
C
configuration
management services 25
M
management services 25
multiplexing, configuring 32
P
Point-to-Point Protocol over ATM
See PPPoA
Point-to-Point Protocol over Ethernet
See PPPoE
PPPoA 31
PPPoE 31
R
reset pinhole, using 38
S
static IP address 31
U
Untrust zone, configuring backup interface 26
V
virtual circuit, adding 31
Virtual Path Identifier/Virtual Channel Identifier
See VPI/VCI
VPI/VCI 31
configuring 32
W
Wireless
antennae 16
using the default interface 16
Index 1
SSG 20 Hardware Installation and Configuration Guide
2 Index
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