New in Netopia Firmware Version 7.7 are the following features:
Internet Group Management Protocol (IGMP) Version 3 support.
•
See “IGMP (Internet Group Management Protocol)” on page 112.
•
TR-101 Support:
• Concurrent suppor t for PPPoE and IPoE connections on the WAN.
See “WAN” on page 73.
• Multiple LAN IP Subnet support. See “LAN” on page 51.
• Additional DHCP range support. These ranges are associated with the additional
LAN subnets on a 1-to-1 basis.
• DHCP option filtering support. Allows DHCP option data to be used to determine the
desired DHCP address range. See “DHCP Option Filtering” on page 277.
• Support for additional WAN settings to control multicast forwarding as well as if
0.0.0.0
See “Advanced:” on page 76.
• Support for “unnumbered” interfaces. For IP interfaces, this allows the address to be
set to 0 and the DHCP client also to be disabled. See page 79.
PPPoE/DHCP Autosensing. See “WAN” on page 73.
•
•
Wireless Multimedia Mode (WMM) support. See “WiFi Multimedia” on page 67.
Support of VLAN ID 0 on the Ethernet WAN and support for setting p-bits on a segment/
•
port basis. See “VLAN” on page 121 and CLI “VLAN Settings” on page 346.
•
Firewall: ClearSailing is automatically enabled on all 2200-Series ADSL2+ platforms.
(Explicit exceptions: bonded and VDSL2, 3341, and 3387WG.) See “
page 149.
is used as the source address for IGMP packets.
Firewall” on
13
Page 12
•
TR-069 Remote device management is automatically enabled by default for 2200Series Gateways. (Explicit exceptions: bonded and VDSL2, 3341, 3387WG). See “TR-
069” on page 349.
Corresponding commands have been added to the Command Line Inter face (CLI). See
“Command Line Interface” on page 247.
•
Reset WAN port counter and CLI command to display individual Ethernet port statistics.
See “reset enet [ all ]” on page 257 and “show enet [ all ]” on page 259.
CLI for Netopia ATA Remote Management.
•
See “Remote ATA Configuration Commands” on page 269.
•
Provide Bandwidth Management using Weighted Fair Queueing for VDSL2 Platforms.
See “Queue Configuration” on page 298.
14
Page 13
About Netopia Documentation
About Netopia Documentation
☛
Netopia, Inc. provides a suite of technical information for its 2200- and 3300-series family
of intelligent enterprise and consumer Gateways. It consists of:
Software User Guide
•
Dedicated Quickstart guides
•
•
Specific White Papers
The documents are available in electronic form as Por table Document Format (PDF) files.
They are viewed (and printed) from Adobe Acrobat Reader, Exchange, or any other application that supports PDF files.
They are downloadable from Netopia’s website:
http://www.netopia.com/
NOTE:
This guide describes the wide variety of features and functionality of the Netopia Gateway, when used in Router mode. The Netopia Gateway may also be
delivered in Bridge mode. In Bridge mode, the Gateway acts as a pass-through
device and allows the workstations on your LAN to have public addresses
directly on the Internet.
Intended Audience
This guide is targeted primarily to residential ser vice subscribers.
Expert Mode sections may also be of use to the support staf fs of broadband service providers and advanced residential service subscribers.
See “Expert Mode” on page 41.
15
Page 14
Documentation Conventions
General
This manual uses the following conventions to present information:
Convention (Typeface)
bold italic
monospaced
bold italic sans serif
terminal
bold terminal
Italic Italic type indicates the complete titles of
Internal Web Interface
Convention (Graphics)Description
blue rectangle or line
solid rounded rectangle
with an arrow
Command Line Interface
Description
Menu commands
Web GUI page links and button names
Computer display text
User-entered text
manuals.
Denotes an “excerpt” from a Web page or
the visual truncation of a Web page
Denotes an area of emphasis on a Web
page
16
Syntax conventions for the Netopia Gateway command line interface are as follows:
ConventionDescription
straight ([ ]) brackets in cmd lineOptional command arguments
Page 15
Documentation Conventions
curly ({ }) brackets, with values separated with vertical bars (|).
bold terminal type
face
italic terminal
type face
Alternative values for an argument are presented in curly ({ }) brackets, with values
separated with vertical bars (|).
User-entered text
Variables for which you supply your own values
17
Page 16
Organization
This guide consists of nine chapters, including a glossary, and an index. It is organized as
follows:
• Chapter 1, “Introduction” — Describes the Netopia document suite, the purpose of,
the audience for, and structure of this guide. It gives a table of conventions.
• Chapter 2, “Basic Mode Setup” — Describes how to get up and running with your
Netopia Gateway.
• Chapter 3, “Expert Mode” — Focuses on the “Exper t Mode” Web-based user inter-
face for advanced users. It is organized in the same way as the Web UI is organized. As
you go through each section, functions and procedures are discussed in detail.
• Chapter 4, “Basic Troubleshooting” — Gives some simple suggestions for trouble-
shooting problems with your Gateway’s initial configuration.
• Chapter 5, “Advanced Troubleshooting” — Gives suggestions and descriptions of
expert tools to use to troubleshoot your Gateway’s configuration.
• Chapter 6, “Command Line Interface” — Describes all the current text-based com-
mands for both the SHELL and CONFIG modes.A summary table and individual command examples for each mode is provided.
• Chapter 7, “Glossary”
• Chapter 8, “Technical Specifications and Safety Information”
• Chapter 9, “Overview of Major Capabilities” — Presents a product description sum-
mary.
• Index
18
A Word About Example Screens
This manual contains many example screen illustrations. Since Netopia 2200- and 3300
Series Gateways offer a wide variety of features and functionality, the example screens
shown may not appear exactly the same for your particular Gateway or setup as they
appear in this manual. The example screens are for illustrative and explanator y purposes,
and should not be construed to represent your own unique environment.
Page 17
Description
CHAPTER 8Technical Specifications and
Safety Information
Description
Dimensions:
Smart Modems: 13.5 cm (w) x 13.5 cm (d) x 3.5 cm (h); 5.25” (w) x 5.25” (d) x 1.375” (h)
Wireless Models: 19.5 cm (w) x 17.0 cm (d) x 4.0 cm (h); 7.6” (w) x 6.75” (d) x 1.5” (h)
3342/3342N/3352/3352N: 8.5 cm (w) x 4.5 cm (d) x 2 cm (h); 3.375” (w) x 1.75” (d) x .875” (h)
2200-Series Modems: 1.06"(2.69 cm) H, 4.36" (11.07 cm) W, 5.71"(14.50 cm) L
2200-Series Wireless Models: 1.2"(3.0cm) H, 8.7" (22.0 cm) W, 5.2"(13.2cm) L
Communications interfaces: The Netopia Gateways have an RJ-11 jack for DSL line
connections or an RJ-45 jack for cable/DSL modem connections and 1 or 4–port 10/100Base-T
Ethernet switch for your LAN connections. Some models have a USB port that can be used to
connect to your PC; in some cases, the USB port also serves as the power source. Some models
contain an 802.11b or 802.11g wireless LAN transmitter.
Power requirements
■12 VDC input
■USB-powered models only: For Use with Listed I.T.E. Only
Environment
Operating temperature:
Storage temperature: 0° to +70° C
0° to +40° C
369
Page 18
Relative storage humidity: 20 to 80% noncondensing
Software and protocols
Software media: Software preloaded on internal flash memory; field upgrades done via download
to internal flash memory via TFTP or web upload. (does not apply to 3342/3352)
Routing: TCP/IP Internet Protocol Suite, RIP
WAN support: PPPoA, PPPoE, DHCP, static IP address
management, traceroute, nslookup, and diagnostic commands.
370
Page 19
Agency approvals
Agency approvals
North America
Safety Approvals:
■United States – UL 60950, Third Edition
■Canada – CSA: CAN/CSA-C22.2 No. 60950-00
EMC:
■United States – FCC Part 15 Class B
■Canada – ICES-003
Telecom:
■United States – 47 CFR Part 68
■Canada – CS-03
International
Safety Approvals:
■Low Voltage (European directive) 73/23
■EN60950 (Europe)
EMI Compatibility:
■89/336/EEC (European directive)
■EN55022:1994 CISPR22 Class B
■EN300 386 V1.2.1 (non-wireless products)
■EN 301-489 (wireless products)
Regulatory notices
European Community. This Netopia product conforms to the European Community CE Mark
standard for the design and manufacturing of information technology equipment. This standard
covers a broad area of product design, including RF emissions and immunity from electrical
disturbances.
371
Page 20
The Netopia Firmware Version 7.7 complies with the following EU directives:
■Low Voltage, 73/23/EEC
■EMC Compatibility, 89/336/EEC, conforming to EN 55 022
Manufacturer’s Declaration of Conformance
☛ Warnings:
This is a Class B product. In a domestic environment this product may cause radio
interference, in which case the user may be required to take adequate measures. Adequate measures include increasing the physical distance between this product and
other electrical devices.
Changes or modifications to this unit not expressly approved by the par ty responsible
for compliance could void the user’s authority to operate the equipment.
United States. This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful inter ference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful inter ference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful inter ference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to tr y 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.
■Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
■Consult the dealer or an experienced radio TV technician for help.
372
Service requirements. In the event of equipment malfunction, all repairs should be performed by
our Company or an authorized agent. Under FCC rules, no customer is authorized to repair this
equipment. This restriction applies regardless of whether the equipment is in or our of warranty. It is
the responsibility of users requiring ser vice to report the need for service to our Company or to one
of our authorized agents. Service can be obtained at Netopia, Inc., 6001 Shellmound Street,
Emeryville, California, 94608. Telephone: 510-597-5400.
Page 21
Manufacturer’s Declaration of Conformance
☛ Important
This product was tested for FCC compliance under conditions that included the use of
shielded cables and connectors between system components. Changes or modifications to this product not authorized by the manufacturer could void your authority to
operate the equipment.
Canada. This Class B digital apparatus meets all requirements of the Canadian Inter ference -
Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Réglement sur le matériel
brouilleur du Canada.
Declaration for Canadian users
NOTICE: The Canadian Industry Canada label identifies certified equipment. This
certification means that the equipment meets cer tain telecommunications network
protective, operation, and safety requirements. The Department does not guarantee the
equipment will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The equipment
must also be installed using an acceptable method of connection. In some cases, the
company’s inside wiring associated with a single line individual service may be extended
by means of a certified connector assembly (telephone extension cord). The customer
should be aware that compliance with the above conditions may not prevent degradation
of service in some situations.
Repairs to the certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations made by the
user to this equipment, or equipment malfunctions, may give the telecommunications
company cause to request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections of
the power utility, telephone lines, and internal metallic water pipe system, if present, are
connected together. This precaution may be particularly important in rural areas.
Caution
Users should not attempt to make such connections themselves, but should contact the appropriate
electric inspection authority, or electrician, as appropriate.
The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication of the
maximum number of terminals allowed to be connected to a telephone inter face. The termination on
an interface may consist of any combination of devices subject only to the requirement that the sum
of the Ringer Equivalence Numbers of all the devices does not exceed 5.
373
Page 22
Important Safety Instructions
Australian Safety Information
The following safety information is provided in conformance with Australian safety requirements:
Caution
DO NOT USE BEFORE READING THE INSTRUCTIONS: Do not connect the Ethernet ports to a carrier or
carriage ser vice provider’s telecommunications network or facility unless: a) you have the written
consent of the network or facility manager, or b) the connection is in accordance with a connection
permit or connection rules.
Connection of the Ethernet ports may cause a hazard or damage to the telecommunication network
or facility, or persons, with consequential liability for substantial compensation.
Caution
■The direct plug-in power supply serves as the main power disconnect; locate the direct plug-in
power supply near the product for easy access.
■For use only with CSA Certified Class 2 power supply, rated 12VDC.
Telecommunication installation cautions
■Never install telephone wiring during a lightning storm.
■Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
■Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
■Use caution when installing or modifying telephone lines.
■Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a
remote risk of electric shock from lightning.
■Do not use the telephone to report a gas leak in the vicinity of the leak.
374
Page 23
47 CFR Part 68 Information
47 CFR Part 68 Information
FCC Requirements
1.The Federal Communications Commission (FCC) has established Rules which permit this device
to be directly connected to the telephone network. Standardized jacks are used for these
connections. This equipment should not be used on party lines or coin phones.
2.If this device is malfunctioning, it may also be causing harm to the telephone network; this
device should be disconnected until the source of the problem can be determined and until
repair has been made. If this is not done, the telephone company may temporarily disconnect
service.
3.The telephone company may make changes in its technical operations and procedures; if such
changes affect the compatibility or use of this device, the telephone company is required to give
adequate notice of the changes. You will be advised of your right to file a complaint with the
FCC.
4.If the telephone company requests information on what equipment is connected to their lines,
inform them of:
a. The telephone number to which this unit is connected.
b. The ringer equivalence number. [0.XB]
c. The USOC jack required. [RJ11C]
d. The FCC Registration Number. [XXXUSA-XXXXX-XX-E]
Items (b) and (d) are indicated on the label. The Ringer Equivalence Number (REN) is used to
determine how many devices can be connected to your telephone line. In most areas, the sum
of the REN's of all devices on any one line should not exceed five (5.0). If too many devices are
attached, they may not ring properly.
FCC Statements
a) This equipment complies with Part 68 of the FCC rules and the requirements adopted by the ACTA.
On the bottom of this equipment is a label that contains, among other information, a product
identifier in the format US:AAAEQ##TXXXX. If requested, this number must be provided to the
telephone company.
b) List all applicable certification jack Universal Service Order Codes (“USOC”) for the equipment:
RJ11.
c) A plug and jack used to connect this equipment to the premises wiring and telephone network
must comply with the applicable FCC Part 68 rules and requirements adopted by the ACTA. A
compliant telephone cord and modular plug is provided with this product. It is designed to be
connected to a compatible modular jack that is also compliant. See installation instructions for
details.
375
Page 24
d) The REN is used to determine the number of devices that may be connected to a telephone line.
Excessive RENs on a telephone line may result in the devices not ringing in response to an incoming
call. In most but not all areas, the sum of RENs should not exceed five (5.0). To be certain of the
number of devices that may be connected to a line, as determined by the total RENs, contact the
local telephone company. For products approved after July 23, 2002, the REN for this product is part
of the product identifier that has the format US:AAAEQ##TXXXX. The digits represented by ## are the
REN without a decimal point (e.g., 03 is a REN of 0.3). For earlier products, the REN is separately
shown on the label.
e) If this equipment, the Netopia 3300- or 2200-Series router, causes harm to the telephone
network, the telephone company will notify you in advance that temporary discontinuance of service
may be required. But if advance notice isn’t practical, the telephone company will notify the customer
as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you
believe it is necessary.
f) The telephone company may make changes in its facilities, equipment, operations or procedures
that could affect the operation of the equipment. If this happens the telephone company will provide
advance notice in order for you to make necessary modifications to maintain uninterrupted ser vice.
g) If trouble is experienced with this equipment, the Netopia 3300- or 2200-Series router, for repair
or warranty information, please contact:
Netopia Technical Support
510-597-5400
www.netopia.com.
If the equipment is causing harm to the telephone network, the telephone company may request that
you disconnect the equipment until the problem is resolved.
h) This equipment not intended to be repaired by the end user. In case of any problems, please refer
to the troubleshooting section of the Product User Manual before calling Netopia Technical Support.
i) Connection to party line service is subject to state tariffs. Contact the state public utility
commission, public service commission or corporation commission for information.
j) If your home has specially wired alarm equipment connected to the telephone line, ensure the
installation of this Netopia 3300- or 2200-Series router does not disable your alarm equipment. If
you have questions about what will disable alarm equipment, consult your telephone company or
qualified installer.
RF Exposure Statement:
NOTE: Installation of the wireless models must maintain at least 20 cm between the wireless
router and any body part of the user to be in compliance with FCC RF exposure guidelines.
376
Electrical Safety Advisory
Telephone companies report that electrical surges, typically lightning transients, are very destructive
to customer terminal equipment connected to AC power sources. This has been identified as a major
nationwide problem. Therefore it is advised that this equipment be connected to AC power through
the use of a surge arrestor or similar protection device.
Page 25
CHAPTER 9Overview of Major Capabilities
The Netopia Gateway offers simplified setup and management features as well as
advanced broadband router capabilities. The following are some of the main features of
the Netopia Gateway:
• “Wide Area Network Termination” on page 378
The Gateway combines an ADSL modem with an Internet router. It translates protocols
used on the Internet to protocols used by home personal computers and eliminates the
need for special desktop software (i.e. PPPoE).
• “Simplified Local Area Network Setup” on page 379
Built-in DHCP and DNS proxy features minimize or eliminate the need to program any
network configuration into your home personal computer.
• “Management” on page 380
A Web server built into the Netopia Operating System makes setup and maintenance
easy using standard browsers. Diagnostic tools facilitate troubleshooting.
• “Security” on page 381
Network Address Translation (NAT), password protection, Stateful Inspection firewall
and other built-in security features prevent unauthorized remote access to your network.
Pinholes, default server, and other features permit access to computers on your home
network that you can specify.
377
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Wide Area Network Termination
PPPoE/PPPoA (Point-to-Point Protocol over Ethernet/ATM)
The PPPoE specification, incorporating the PPP and Ethernet standards, allows your computer(s) to connect to your Service Provider’s network through your Ethernet WAN connection. The Netopia-series Gateway supports PPPoE, eliminating the need to install PPPoE
client software on any LAN computers.
Service Providers may require the use of PPP authentication protocols such as Challenge
Handshake Authentication Protocol (CHAP) or Password Authentication Protocol (PAP).
CHAP and PAP use a username and password pair to authenticate users with a PPP ser ver.
A CHAP authentication process works as follows:
1. The password is used to scramble a challenge string.
2. The password is a shared secret, known by both peers.
3. The unit sends the scrambled challenge back to the peer.
PAP, a less robust method of authentication, sends a username and password to a PPP
server to be authenticated. PAP’s username and password pair are not encrypted, and are
therefore sent “unscrambled”.
Instant-On PPP
378
You can configure your Gateway for one of two types of Internet connections:
• Always On
• Instant On
These selections provide either an uninterrupted Internet connection or an as-needed connection.
While an Always On connection is convenient, it does leave your network permanently connected to the Internet, and therefore potentially vulnerable to attacks.
Netopia's Instant On technology furnishes almost all the benefits of an Always-On connection while providing two additional security benefits:
• Your network cannot be attacked when it is not connected.
Page 27
Simplified Local Area Network Setup
• Your network may change address with each connection making it more difficult to
attack.
When you configure Instant On access, you can also configure an idle time-out value. Your
Gateway monitors traffic over the Internet link and when there has been no traffic for the
configured number of seconds, it disconnects the link.
When new traffic that is destined for the Internet arrives at the Gateway, the Gateway will
instantly re-establish the link.
Your ser vice provider may be using a system that assigns the Internet address of your
Gateway out of a pool of many possible Internet addresses. The address assigned varies
with each connection attempt, which makes your network a moving target for any attacker.
Simplified Local Area Network Setup
DHCP (Dynamic Host Configuration Protocol) Server
DHCP Server functionality enables the Gateway to assign to your LAN computer(s) a “private” IP address and other parameters that allow network communication. The default
DHCP Server configuration of the Gateway supports up to 253 LAN IP addresses.
This feature simplifies network administration because the Gateway maintains a list of IP
address assignments. Additional computers can be added to your LAN without the hassle
of configuring an IP address.
DNS Proxy
Domain Name System (DNS) provides end users with the ability to look for devices or web
sites by typing their names, rather than IP addresses. For web surfers, this technology
allows you to enter the URL (Universal Resource Locator) as text to surf to a desired website.
The Netopia DNS Proxy feature allows the LAN-side IP address of the Gateway to be used
for proxying DNS requests from hosts on the LAN to the DNS Ser vers configured in the
gateway. This is accomplished by having the Gateway's LAN address handed out as the
“DNS Server” to the DHCP clients on the LAN.
379
Page 28
☛ NOTE:
The Netopia DNS Proxy only proxies UDP DNS queries, not TCP DNS queries.
Management
Embedded Web Server
There is no specialized software to install on your PC to configure, manage, or maintain
your Netopia Gateway. Web pages embedded in the operating system provide access to
the following Gateway operations:
• Setup
• System and security logs
• Diagnostics functions
Once you have removed your Netopia Gateway from its packing container and powered the
unit up, use any LAN attached PC or workstation running a common web browser application to configure and monitor the Gateway.
Diagnostics
380
In addition to the Gateway’s visual LED indicator lights, you can run an extensive set of
diagnostic tools from your Web browser.
Two of the facilities are:
• Automated “Multi-Layer” Test
The
Run Diagnostics
functionality of the Gateway, from the physical connections to the data traffic.
• Network Test Tools
Three test tools to determine network reachability are available:
Ping - tests the “reachability” of a particular network destination by sending an ICMP
echo request and waiting for a reply.
NSLookup - converts a domain name to its IP address and vice versa.
link initiates a sequence of tests. They examine the entire
Page 29
Security
TraceRoute - displays the path to a destination by showing the number of hops and the
router addresses of these hops.
The system log also provides diagnostic information.
☛ NOTE:
Your Ser vice Provider may request information that you acquire from these various diagnostic tools. Individual tests may be performed at the command line.
(See “Command Line Interface” on page 247.).
Security
Remote Access Control
You can determine whether or not an administrator or other authorized person has access
to configuring your Gateway. This access can be turned on or off in the Web interface.
Password Protection
Access to your Netopia device can be controlled through two access control accounts,
Admin or User.
• The Admin, or administrative user, performs all configuration, management or mainte-
nance operations on the Gateway.
• The User account provides monitor capability only.
A user may NOT change the configuration, perform upgrades or invoke maintenance
functions.
Account usernames can now be changed for the Admin and User accounts.
Network Address Translation (NAT)
The Netopia Gateway Network Address Translation (NAT) security feature lets you conceal
the topology of a hard-wired Ethernet or wireless network connected to its LAN interface
381
Page 30
Internet
from routers on networks connected to its WAN interface. In other words, the end computer stations on your LAN are invisible from the Internet.
Only a single WAN IP address is required to provide this security suppor t for your entire
LAN.
LAN sites that communicate through an Internet Ser vice Provider typically enable NAT,
since they usually purchase only one IP address from the ISP.
• When NAT is ON, the Netopia Gateway “proxies” for the end computer stations on your
network by pretending to be the originating host for network communications from nonoriginating networks. The WAN interface address is the only IP address exposed.
The Netopia Gateway tracks which local hosts are communicating with which remote
hosts. It routes packets received from remote networks to the correct computer on the
LAN (Ethernet) inter face.
• When NAT is OFF, a Netopia Gateway acts as a traditional TCP/IP router, all LAN com-
puters/devices are exposed to the Internet.
A diagram of a typical NAT-enabled LAN follows:
Netopia Gateway
WAN
Ethernet
Interface
LAN
Ethernet
Interface
382
NAT
NAT-protected
LAN stations
Embedded Admin Services:
HTTP-Web Server and Telnet Server Port
Page 31
Security
☛ NOTE:
1. The default setting for NAT is ON.
2. Netopia uses Port Address Translation (PAT) to implement the NAT facility.
3. NAT Pinhole traffic (discussed below) is always initiated from the WAN side.
Netopia Advanced Features for NAT
Using the NAT facility provides effective LAN security. However, there are user applications
that require methods to selectively by-pass this security function for certain types of Internet traffic.
Netopia Gateways provide special pinhole configuration rules that enable users to establish NAT-protected LAN layouts that still provide flexible by-pass capabilities.
Some of these rules require coordination with the unit’s embedded administration services: the internal Web (HTTP) Port (TCP 80) and the internal Telnet Ser ver Port (TCP 23).
Internal Servers
The internal servers are the embedded Web and Telnet ser vers of the Gateway. You would
change the internal server ports for Web and Telnet of the Gateway if you wanted to have
these services on the LAN using pinholes or the Default server.
Pinholes
This feature allows you to:
• Transparently route selected types of network traffic using the port forwarding facility.
FTP requests or HTTP (Web) connections are directed to a specific host on your LAN.
• Setup multiple pinhole paths.
Up to 32 paths are supported
• Identify the type(s) of traf fic you want to redirect by por t number.
• Direct your Gateway to forward all externally initiated IP traffic (TCP and UDP protocols
only) to a default host on the LAN.
• Enable it for cer tain situations:
Where you cannot anticipate what port number or packet protocol an in-bound application might use.
For example, some network games select arbitrary port numbers when a connection is
opened.
When you want all unsolicited traffic to go to a specific LAN host.
Combination NAT Bypass Configuration
384
Specific pinholes and Default Server settings, each directed to different LAN devices, can
be used together.
☛ WARNING:
Creating a pinhole or enabling a Default Server allows inbound access to the
specified LAN station. Contact your Network Administrator for LAN security
questions.
Page 33
Security
IP-Passthrough
Netopia OS now offers an IP passthrough feature. The IP passthrough feature allows a single PC on the LAN to have the Gateway’s public address assigned to it. It also provides PAT
(NAPT) via the same public IP address for all other hosts on the private LAN subnet.
VPN IPSec Pass Through
This Netopia service supports your independent VPN client software in a transparent manner. Netopia has implemented an Application Layer Gateway (ALG) to support multiple PCs
running IP Security protocols.
This feature has three elements:
1. On power up or reset, the address mapping function (NAT) of the Gate-
way’s WAN configuration is turned on by default.
2. When you use your third-party VPN application, the Gateway recognizes
the traffic from your client and your unit. It allows the packets to pass
through the NAT “protection layer” via the encrypted IPSec tunnel.
3. The encrypted IPSec tunnel is established “through” the Gateway.
A typical VPN IPSec Tunnel pass through is diagrammed below:
Netopia
Gateway
385
Page 34
☛ NOTE:
Typically, no special configuration is necessary to use the IPSec pass through
feature.
In the diagram, VPN PC clients are shown behind the Netopia Gateway and the
secure server is at Corporate Headquarters across the WAN. You cannot have
your secure server behind the Netopia Gateway.
When multiple PCs are starting IPSec sessions, they must be started one at a
time to allow the associations to be created and mapped.
VPN IPSec Tunnel Termination
This Netopia service supports termination of VPN IPsec tunnels at the Gateway. This permits tunnelling from the Gateway without the use of third-par ty VPN client software on your
client PCs.
Stateful Inspection Firewall
Stateful inspection is a security feature that prevents unsolicited inbound access when
NAT is disabled. You can configure UDP and TCP “no-activity” periods that will also apply to
NAT time-outs if stateful inspection is enabled on the interface.
Technical details are discussed in “Expert Mode” on page 41.
SSL Certificate Support
386
On selected models, you can also install a Secure Sockets Layer (SSL V3.0) certificate
from a trusted Cer tification Authority (CA) for authentication purposes. If this feature is
available on your Gateway, an additional link will appear in the Install page.
Netopia Firmware Version 7.7 uses SSL certificates for TR-069 support.
See “Install Certificate” on page 213.
VLANs
Netopia's VGx technology allows a single Netopia VGx-enabled broadband gateway to act
as separate virtual gateways, treating each individual service as a single service "channel." The VGx-enabled gateway applies specific policies, routing, and prioritization parameters to each service channel, ensuring delivery of that ser vice to the appropriate peripheral
Page 35
Security
device with the requisite level of QoS and correct feature sets — making it ideal for delivery of triple play voice, video, and data services.
VGx was developed to ensure that subscribers receive the quality of voice, video, and data
services they expect — to prevent a large data download from causing jitter y video or poor
voice quality. VGx achieves this goal by providing superior service segmentation and QoS
features obtained by mapping multiple local virtual local area networks (VLANs) to one or
more specific permanent vir tual circuits (PVCs) for DSL, or wide area network VLANs for a
fiber network.
Traffic prioritization is determined through the Institute of Electrical Engineering (IEEE)
standard 802.1p, which specifies QoS algorithms to prioritize traffic based on protocol and
source. This insures that each ser vice receives the QoS treatment it requires; for example,
• video is free from latency,
• VoIP service is prioritized to insure aural quality, and
Telnet 262
Command line interface (see
CLI)
Community 328
Compression, protocol 308
Concurrent Bridging/
Routing 119
CONFIG
Command List 249
Configuration mode 265
, 263
, 274
D
D. port 184
Default IP address 41
denial of service 364
designing a new filter set 187
DHCP 275
DHCP filtering 277
DHCP lease table 257
Diagnostic log 257, 261
Level 330
Diagnostics 380
DNS 280
DNS Proxy 379
Documentation
conventions 16
389
Page 38
Domain Name System
(DNS) 280
DSL Forum settings 348
E
Echo request 308
echo-period 308
Embedded Web Server 380
Ethernet address 274
Ethernet statistics 257
F
Feature Keys
Obtaining 209
filter
parts 181
parts of 181
filter priority 180
filter set
adding 188
display 183
filter sets
adding 188
defined 179
deleting 194
disadvantages 178
using 188
filtering example #1 184
filters
actions a filter can
take 180
adding to a filter set 190
defined 179
deleting 194
filters 178
Security log 201
Set bncp command 272,
, 274
273
Set bridge commands 274
Set DMT commands 279
Set dns commands 280
Set ip static-routes
commands 303
Set ppp module port authentication command 310
Set preference more
command 314
Set preference verbose
command 314
set security state-insp 322
Set servers command 315
Set servers telnet-tcp
command 315
Set snmp sysgroup location
command 328
Set snmp traps authentification-traps ip-address
command 328
Set system diagnostic-level
command 330
Set system heartbeat
command 331
Set system name
command 329
Set system NTP
command 332
Set system password
command 331
set system syslog 333
Set wireless option
command 336
Set wireless user-auth option
command 345
SHELL
Command Shortcuts 252
Commands 251
Prompt 251
SHELL level 265
SHELL mode 251
show config 258
Show ppp 264
Simple Network Management
Protocol (SNMP) 328
SMTP 305
SNMP 109, 305, 328
SNMP Notify Type
settings 329
src. port