Silex technology SX-500-1402 User Manual

SX-500-1402

Serial Device Server

Cryptographic Officer Guidance Manual

Part Number 140-00188-210A

© 2009 Silex Technology America, Inc. All rights reserved. June2009

Silex Technology America SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS OF THIS PRODUCT FOR A PARTICULAR PURPOSE. Silex shall not be liable for any errors contained in this manual or for any damages resulting from loss of use, data, profits, or any incidental or consequential damages arising from the use of SILEX products or services. The information contained in this documentation is subject to change without notice.

Information and descriptions contained herein are the property of Silex. Such information and descriptions may not be copied, disseminated, or distributed without the express written consent of Silex. This publication is subject to change without notice.

The firmware embedded in this SX-500 serial device server includes the eCos operating system. eCos and certain other software programs used in the SX-500 are licensed under GNU GPL compatible Free Software Licenses (with the eCos exception clause). In compliance with these licenses, you can obtain the relevant source code at no charge by contacting Silex at [e-mail].

Trademarks

All company or product names referenced in this document may be trademarks or registered trademarks of their respective owners.

Silex Technology America, Inc.

www.silexamerica.com

Part Number 140-00188-210A

Contents
About This Reference Guide....................................................................................................................................		1
Safety Precautions................................................................................................................................................		1
Emissions Disclaimer............................................................................................................................................		1
Chapter 1: Introduction............................................................................................................................................		3
PHYSICAL PORTS...............................................................................................................................................		4
Logical Ports.........................................................................................................................................................		4
Configuration ........................................................................................................................................................		5
Physical Protection................................................................................................................................................		7
Secure Operation..................................................................................................................................................		7
Chapter 2
Installing the Serial Device Server Hardware...........................................................................................................		8
Verify Package Contents ......................................................................................................................................		8
Installing the Serial Device Server........................................................................................................................		8
Monitoring Serial Device Server Status .............................................................................................................		10
Chapter 3
Configuring the Serial Device Server......................................................................................................................		11
Basic Configuration Requirements......................................................................................................................		11
Configuration Methods........................................................................................................................................		12
First-Time IP Address Configuration ..................................................................................................................		13
Using a Web Browser to Configure the Serial Device Server.............................................................................		15
Using the Internal Command Console to Configure the Serial Device Server....................................................		19
Chapter 4
Using the Serial Device Server with Your Application.............................................................................................		21
Serial Port Emulator............................................................................................................................................		21
Raw TCP connection..........................................................................................................................................		22
RFC 2217 Remote Modem Control Support.......................................................................................................		23
ECable Mode......................................................................................................................................................		23
Print Server Mode...............................................................................................................................................		24
FTP.....................................................................................................................................................................		24
Console Mode Switching.....................................................................................................................................		25
AT Commands....................................................................................................................................................		25
Chapter 5
Advanced Configuration.........................................................................................................................................		27
Factory Default Settings......................................................................................................................................		27
Restoring Factory Default Settings..................................................................................................................		28
Modifying TCP/IP Settings ................................................................................................................................		28
Using AT Modem Commands.............................................................................................................................		29
Standard AT Commands Supported................................................................................................................		30
Response Codes.................................................................................................................................................		32
Chapter 6
Troubleshooting......................................................................................................................................................		33
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Chapter 7
Product Specifications............................................................................................................................................		35
TCP Port Connections........................................................................................................................................		36
Appendix A
Advanced Security Configuration............................................................................................................................		37
Appendix B
Console Commands...............................................................................................................................................		41
Wireless and Network Security Commands........................................................................................................		41
Port Commands..................................................................................................................................................		47
Server Information Commands...........................................................................................................................		48
Service Commands.............................................................................................................................................		50
String Commands...............................................................................................................................................		52
TCP/IP Commands.............................................................................................................................................		53
Firmware Update.................................................................................................................................................		58
Miscellaneous Commands..................................................................................................................................		59
Help Commands.................................................................................................................................................		59
Appendix C
Firmware Update Procedures.................................................................................................................................		61
Appendix D
Safety and Regulatory Notices...............................................................................................................................		63
Information for United States Users....................................................................................................................		63
Declaration of Conformity (FCC) (SX-500)..........................................................................................................		64
Information for Canadian Users (IC notice) (SX-500)..........................................................................................		64
Information for European Users (SX-500)...........................................................................................................		65
Declaration of Conformity (CE) (SX-500)............................................................................................................		65
Appendix E
Silex Contact Information........................................................................................................................................		66
Figures
Figure 1 SX-500 ......................................................................................................................................................		3
Figure 2 TCP/IP Window.......................................................................................................................................		28
Tables
Table 1 Package Contents......................................................................................................................................		8
Table 2 Status Monitors .........................................................................................................................................		10
Table 3	Factory Default Settings............................................................................................................................	27
Table 4	TCP/IP Settings........................................................................................................................................	29
Table 5 AT Commands..........................................................................................................................................		30
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Table 6	Extended AT Commands..........................................................................................................................	31
Table 7	Response Codes......................................................................................................................................	32
Table 8	Product Specifications..............................................................................................................................	35
Table 9	Radio Performance Specifications............................................................................................................	35
Table 10 TCP Port Connections............................................................................................................................		36
Table 11 Network Commands...............................................................................................................................		41
Table 12 Port Commands......................................................................................................................................		47
Table 13 Server Information Commands...............................................................................................................		48
Table 14 Service Commands.................................................................................................................................		50
Table 15 String Commands...................................................................................................................................		52
Table 16 TCP/IP Commands.................................................................................................................................		53
Table 17 Firmware Update....................................................................................................................................		58
Table 18 Miscellaneous Commands......................................................................................................................		59

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About This Reference Guide

Safety Precautions

To prevent damage to the Serial Device Server’s electronic circuit components, follow established ESD practices and procedures for handling static-sensitive devices. All ESD-sensitive components must be stored and shipped in ESD-conductive bags or bubble-wrap and labeled as such using the standardized ESD adhesive warning label.

Ethernet electrical wiring must be at least 6 feet from bare power wiring or lightning rods and associated wires, and at least 6 inches from other types of wire (antenna wires, doorbell wires, wires from transformers to neon signs), steam or hot water pipes, and heating devices.

Protectors and grounding wire placed by the service provider must not be connected to, removed, or modified by the customer.

Emissions Disclaimer

Regulatory compliance information can be found in Appendix D of this manual. Final emission certification per FCC, CE and other agency requirements are the responsibility of the OEM using any printed circuit assemblies or other items used in this developer’s kit in their saleable packaged product.

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REVISION HISTORY

Rev.	Date	Revision by	Comments
No.
A	2009.08.13	Lee Aydelotte	Initial Release

About This Reference Guide

Silex

Page 2

Part Number 140-00188-210A

Chapter 1: Introduction

The SX-500-1402 Serial Device Server provides a FIPS 140 compliant encrypted wireless LAN connection for an attached client device. The client device may attach to the SX-500 via a serial port or wired Ethernet port.

Figure 1 SX-500

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PHYSICAL PORTS

The physical ports on the SX-500 are as follows:

Port Name	Description
Power	Jack for attachment of external power supply
Ethernet	RJ-45 connector for attachment of Ethernet cable
Serial	DB-9 connector for attachment of serial interface cable
Wireless	RP-SMA connector for attachment of an external antenna
Button	Momentary push button
LED	Green, Yellow and Orange LEDs

For installation and connection of the interface ports, refer to Chapter 2.

Logical Ports

The SX-500 has logical interfaces for transfer of data and for configuration and control of the unit. These logical interfaces may share a physical port. The application firmware in the SX-500 separates and routes the data to the appropriate internal firmware task associated with the logical interface. For network ports (Ethernet, Wireless) this separation is based on the TCP or UDP protocol port number. For the serial port, data or control/status mode is controlled by specific protocol strings, only one mode is active at a time. Serial port control/status mode is only available if the unit is explicitly configured to allow it. The following table describes the logical interfaces of the unit when operating in a FIPS 140-2 approved mode.

	FIPS-140-2 Interface	Physical	Logical Interface
		Interface
	Data Input	Serial	Plaintext data for transmission to network
		Ethernet	Plaintext data for bridging to wireless
			network
		Wireless	Ciphertext data for Serial or Ethernet port
	Data Output	Serial	Plaintext data received from wireless
			network
		Ethernet	Plaintext data received from wireless
			network
		Wireless	Ciphertext data from Serial or Ethernet port
	Control Input	Ethernet	Control data for console task received via
			Telnet
			Control data for web config task received
			via HTTP
		Wireless	Control data for console task received via
			Telnet
			Control data for web config task received
			via HTTP

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FIPS-140-2 Interface	Physical	Logical Interface
	Interface
	Button	Invoke configuration/status function
Status Output	Ethernet	Plaintext status response from console task
		via Telnet
		Plaintext status response from web config
		via HTTP
	Wireless	Status response from console task via
		Telnet
		Status response from web config via HTTP
	Serial	Plaintext status response from button push
	LEDs	Indicate link and unit error status
Power Interface	Power
	Serial

When the module enters an error state, all Data Input and Data Output interfaces are disabled. If an error state is encountered, the LED interface will indicate the error by blinking for several seconds, and then the unit will reset. The unit will not send or receive any data until the reset is complete.

The SX-500 performs cryptographic self tests during initialization after power up or a firmware induced reset. Until the self tests are complete, no data input or output interfaces are active. If the self test fails, the unit will enter an error state.

Configuration

The Cryptographic Officer is responsible for configuring the unit for use in the target environment. See Chapter 3 and Appendix A for instructions on configuring the unit. The peripheral unit (usually a PC) being used to configure the SX-500 must be directly connected to the unit via a crossover cable or local hub which is not connected to any LAN, WLAN or other larger network. This will enable manual transport and electronic entry of secret and private keys (RSA private key and WPA Pre-Shared Key) in a plaintext form. Even if RSA private keys are protected with a PEM passphrase when entered, they are still considered to be in plaintext form.

For the SX-500 to operate in FIPS 140-2 approved mode, the wireless security configuration must be set as follows:

Item	Required Setting
Wireless Encryption Mode	WPA2 (AES-CCMP)
Wireless Authentication	PSK or TLS or PEAP

The SX-500 allows other security settings for interoperability in non FIPS 140 environments. However, use of the SX-500 with any settings other than those indicated above is not FIPS 140-2 compliant.

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In particular, the WPA2-WPA transition mode is NOT FIPS 140-2 compliant. Only networks exclusively using WPA2 (AES-CCMP) encryption comply.

The current security settings for the device may be observed by logging into the unit web server and navigating to the network security page, which will show the currently active and configured values for the above parameters (and others). The settings may also be observed with the configuration console command SHOW NW. This should be done after configuration and before use to verify that the device is properly configured for the intended target environment.

The SX-500 is validated at level 1, which means it has no physical security beyond the physical protection of its metal case, and is presumed to be used in a secure environment. If the unit is to be left unused in an unsecured area, or is to be transported to a new location via unsupervised means, it is recommended that the Cryptographic Officer zeroize the device. This is done with the configuration console command ZEROKEYS. After zeroization the unit will need to be reconfigured before wireless communication in FIPS compliant mode are possible.

The Cryptographic Officer must be aware that all configuration program inputs are in plaintext for purposes of FIPS 140-2 compliance regardless of the transport encoding used. The only FIPS 140-2 cryptographic protection claimed for this module is for the wireless link between the unit and an associated Access Point.

If WPA2-PSK mode is being used, the PSK must be entered by the Cryptographic officer on an isolated network with the machine containing Cryptographic Officer’s web browser directly connected to the SX-500 and not connected via a LAN. The same is true for entry of externally generated RSA private keys/public certificates.

The Crypographic officer must zeroize the module when transitioning the device configuration from a FIPS-140-2 approved mode to a non-approved mode. The Cryptographic Officer should zeroize the module before resetting the configuration to factory defaults. If this is impossible, because the reason for resetting is the connection to the unit is impossible, the unit must be zeroized after the configuration reset is complete and connection has been restored.

There are two types of bypass states possible with the module (non-approved modes). The first is to use any wireless encryption/authentication combination not specified above as being FIPS 140-2 compliant and then reset the unit. The second is to configure the unit to not be in Ethernet to Wireless mode, plug in a wired Ethernet cable, and then reset the unit.

If WPA2-PSK mode is being used, the PSK must be entered by the Cryptographic officer on an isolated network with the machine containing Cryptographic Officer’s web browser directly connected to the SX-500 and not connected via a LAN. The same is true for entry of externally generated RSA private keys/public certificates.

In addition to the wireless security settings above, the following settings must be made for operation in FIPS 140-2 mode:

Item	Required Setting
HTTPS	Disabled (factory default)
S-Telnet	Disabled (factory default)
TCP data service SSL	Disabled (factory default)
Serial port console mode string	NULL (disabled – factory default)
Serial port filter	TRAP (factory default)

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Physical Protection

There are no user serviceable parts inside the SX-500 enclosure. If the enclosure should be opened for any reason, the Cryptographic Officer should zeorize the module before the enclosure is opened.

Secure Operation

The Cryptographic Officer and any users of the SX-500 module must be familiar with the SX-500 Cryptographic Security Policy and must follow its guidelines for proper operation.

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Chapter 2

Installing the Serial Device Server Hardware

The Serial Device Server includes most of the hardware and software components required for installation. The one item that you will need to purchase separately is a cable to connect your serial device to the Serial Device Server (this cable is not included because of the wide variety of connector types used on serial devices).

Verify Package Contents

The Serial Device Server includes the components listed in Table 1. Please ensure that all materials listed are present and free from visible damage or defects before proceeding. If anything appears to be missing or damaged, please contact Silex.

Table 1 Package Contents

Description

SX-500 Base Unit w/external pole antenna

Setup Guide

CD-ROM containing Serial Port Emulator Software, and User’s

Reference Guide

AC Power Supply with power cord

Warranty Card

Installing the Serial Device Server

Follow the steps below to install the Serial Device Server. The Serial Device Server’s factory default settings should be sufficient for most serial connections; however, some of the configuration settings may have to be changed for your particular installation.

1.Before attempting to install the Serial Device Server, make sure you have installed and set up your serial device as described in the documentation that came with the device.

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2.Write down the 12-digit MAC (Media Access Code) address printed on the label located on the bottom of the Serial Device Server (for example: 004017023F96). You may need this number in order to configure the Serial Device Server.

3.If you have a wireless model, connect the antenna to the unit.

4.Connect the Serial Device Server to your serial device. If you are using RS-232, you may use standard PC cabling (you should normally use a null modem crossover cable). The 9-pin connector pinouts and cabling are as follows:

RS-232 connector pinouts and cabling

5.Plug the Serial Device Server power supply adapter into a suitable AC receptacle, and then plug the power supply cable into the Serial Device Server. Alternatively, you can use pin 9 on the 9-pin connector to provide power to the Serial Device Server (1 amp @ +5V is required).

When power is applied all three LEDs will be lit. The Serial Device Server will run through a sequence of power-up diagnostics for a few seconds.

∙If the Serial Device Server is operating properly, the green and yellow LEDs will turn off and then will show the device status as shown in Table 2 in the next section. The orange LED should remain solidly illuminated.

∙The unit powers up in the Normal mode, which provides for connection from the network to device(s) connected to the serial port of the Serial Device Server.

∙If the orange LED blinks continuously in a regular pattern, a problem exists. If this is the case, try powering the unit OFF and then ON again.

NOTE: Pin 9 is normally configured for supplying +5V from an external power source in lieu of using the AC power supply adapter. .

6. Connect the Serial Device Server to your network through a switch or hub using a category 5 (CAT5) Ethernet cable. Then cycle power on the device to switch the server into wired mode and switch off the wireless networking functionality as long as the cable is plugged in.

NOTE: SILEX RECOMMENDS USING A HARDWIRED ETHERNET CONNECTION FOR CONFIGURING WIRELESS SERIAL DEVICE SERVERS. If you have a wireless Serial Device Server model and cannot use an Ethernet connection, refer to step 4 in the First Time IP Address Configuration section of this chapter for instructions on how to set up the Serial Device Server using a completely wireless Ad Hoc environment. Device Keys (unit private key and WPA2-PSK) must be entered via an isolated wired connection

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7. The Serial Device Server’s IP address must be configured before a network connection is available. If your network offers DHCP (Dynamic Host Configuration Protocol), the Serial Device Server will automatically search for a DCHP server upon power up and obtain an IP address. If your network does not offer DHCP, a static (fixed) IP address must be assigned (see your system administrator for assistance). If you use DHCP, make sure that the length of the DHCP lease is adequate so that the IP address of the Serial Device Server does not change.

Monitoring Serial Device Server Status

You can monitor the Serial Device Server status using the yellow, green and orange LED status indicators on the monitor. Table 2 defines the functions of the LED status indicators.

Table 2 Status Monitors

	Function	State	Status
		On	The Serial Device Server is receiving power
	Power	Off	The Serial Device Server is not receiving power
		Slow Blink ( 0.6Hz)	Firmware update in progress
	Orange
		Fast Blink (5-10Hz)	The Serial Device Server is malfunctioning or
			cryptographic error detected.
		Yellow Off	No network connection
		Green Off
		Yellow On	Wireless network connected, not authenticated.
		Green Off
		Yellow On	Wireless network active (authenticated) in FIPS 140-2
		Green On	approved mode.
	Network Status
		Yellow Blinking (5Hz)	Wireless network data received in FIPS 140-2 approved
	Yellow or Green	Green On	mode.
		Yellow off	Bypass (non-approved) mode, no wireless network
		Green Blinking (½ Hz)	connection
		Yellow on	Bypass mode, wireless network connected.
		Green Blinking (½ Hz)
		Yellow Blinking (5 Hz)	Bypass mode, wireless network data received
		Green Blinking (5 Hz)

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Chapter 3

Configuring the Serial Device Server

This chapter describes the methods for configuring the basic settings of the Serial Device Server, including the IP address, serial port settings, and wireless security. The Serial Device Server also has an extensive range of advanced configuration capabilities that are described in Chapter 5, Appendix A, and Appendix B. The Serial Device Server configuration should be done by a network administrator or another person with technical knowledge of TCP/IP networking and serial communications.

Basic Configuration Requirements

In order to use the Serial Device Server, the following basic parameters must be configured:

TCP/IP Settings:

∙IP Address

∙Subnet Mask

∙Router Address

Note: The TCP/IP settings can be automatically configured using DHCP.

Wireless Configuration Settings:

∙SSID

∙Mode (Infrastructure or Ad Hoc)

∙Channel (required only if using Ad Hoc mode)

Security Settings:

∙Wireless Encryption Mode (WPA2, WPA, WPA2-WPA, WEP)

∙Wireless Encryption Settings

∙Wireless Authentication Mode (WPA-PSK, Open System, Shared Key, TTLS, TLS, LEAP, PEAP)

∙Wired Authentication Mode (TTLS, TLS, PEAP)

∙Authentication Settings

Note: There are numerous possible encryption and authentication settings, and every network can have different settings. Please refer to Appendix A for a detailed summary of these settings.

Serial Port Settings (must match the settings of the attached serial device):

∙Baud Rate (Speed)

∙Parity

∙Character Size

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∙Flow Control

In addition to the above parameters, the Serial Device Server allows you to configure numerous other capabilities. These other capabilities provide you with the unparalleled flexibility to use the Serial Device Server on virtually any 802.11 or Ethernet network with a wide range of serial devices.

Configuration Methods

There are two ways to configure the Serial Device Server:

∙Internal Web Pages (HTTP). You can use any standard web browser to access the Serial Device Server internal web pages. These web pages provide an easy-to-use graphical interface for configuring the Serial Device Server. In order to use the internal web pages for the first time, you must assign the Serial Device Server IP address using some other method (for example, DHCP or arp/ping). This initial IP address assignment need only be done one time.

∙Internal Command Console. The internal command console provides a sophisticated command line interface for advanced users to configure the Serial Device Server. It can be accessed by connecting a serial cable to the serial port and using console mode switching as descried in chapter 4. Once the IP address has been assigned, the internal command console can also be accessed via TELNET, or via the internal web pages. NOTE: when operating in a FIPS 140-2 approved mode, the console is not available via the serial port.

If you have a Serial Device Server wireless model, Silex recommends that you temporarily plug the Serial Device into a wired Ethernet network during the configuration process. Although it is possible to configure the Serial Device Server with a completely wireless setup, it is much simpler to perform the process using a wired Ethernet connection. This is primarily because the wireless security on most wireless networks prevents the addition of a new wireless device unless all security parameters are first entered into that device. As a result, you must set up a temporary dedicated ad hoc wireless network in order to configure the Serial Device Server in a completely wireless environment (refer to the step 4 in the First Time IP Address Configuration section of this chapter for instructions on how to set up the Serial Device Server using a completely wireless Ad Hoc environment). This is required when entering security encryption keys (RSA private key or WPA2-PSK).

Configuring the Serial Device Server using each of the above methods is described in the following sections of this chapter.

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First-Time IP Address Configuration

NOTE: Skip this section if you have already configured the SX-500 IP address

If you are configuring the Serial Device Server from a non-Windows computer or if you cannot use an Ethernet connection, you must first configure the Serial Device Server IP address. Note that it is only necessary to perform this task one time -- once the address has been configured, the Serial Device Server can be accessed from any computer on the network that has the appropriate privileges. The steps are as follows:

1.If your network has a DHCP server and you can use an Ethernet connection to the Serial Device Server:

a.Make sure your PC is connected and has access to your network.

b.Connect an Ethernet cable from your network hub to the Serial Device Server (if you have a wireless Serial Device Server and do not have hardwired capabilities, then you must go to Step 4 below for setup instructions).

c.Power on the Serial Device Server.

d.The administration program on most DHCP servers logs the IP address and MAC address of each DHCP client. The MAC address of the Serial Device Server can be found on the label affixed to the unit. If your DHCP server has logged this information, write down the IP address of the Serial Device Server for future reference. You are now ready to configure the Serial Device Server (skip the remainder of this section).

e.If your DHCP server does not provide client information or if you do not have access to the DHCP server, then you can get the IP address by connecting a serial device such as a printer, a Windows PC running HyperTerminal, or another serial device capable of printing ASCII characters to the serial port the Serial Device Server). Your serial device must be set at 115.2Kbps, 8-bit character size, and no parity.

f.With the serial device and Serial Device Server switched on and ready, press the Reset pushbutton on the Serial Device Server. This will cause the Serial Device Server configuration data to be sent to the connected serial device. The serial device should display or print the current IP address assigned to the Serial Device Server by your network DHCP service. Write down this address for future reference. You are now ready to configure the Serial Device Server (skip the remainder of this section).

2.If you can connect the Serial Device Server via Ethernet but do not have a DHCP server, then you must use the following procedure for the first-time IP configuration of the Serial Device Server.

a.Make sure your PC is connected and has access to your network

b.Connect an Ethernet cable from your network hub to the Serial Device Server. The Serial Device Server must be on the same network segment as the PC (that is, there can be no router between the Serial Device Server and the PC).

c.From the Windows Command Prompt (MS-DOS Prompt), the Mac OS X Terminal Utility, or the UNIX/Linux command line, enter the command

arp –s ipaddress macaddress

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ping ipaddress

Where ipaddress is the desired IP address of the Serial Device Server and macaddress is the MAC address of the Serial Device Server (found on the label affixed to the Serial Device Server). For example:

arp –s 192.168.5.53 00:40:17:00:00:01 ping 192.168.5.53

Note that Windows systems use the format xx-xx-xx-xx-xx-xx for the MAC address (for example, 00-0017-00-00-01).

You will see a reply from the Serial Device Server with the number of bytes and other information if the address was successfully set.

If you get an error message or no response, then the IP address was not set. If this is the case, the Serial Device Server may not be at its default configuration. To reset the Serial Device Server to its default settings, hold down the reset pushbutton for more than five seconds.

d.You are now ready to configure the Serial Device Server (skip the remainder of this section).

NOTE: Skip the following step if you have configured IP address of the Serial Device Server using an Ethernet cable.

3. If you are using a wireless connection for the first-time configuration of the Serial Device Server, you must set up a temporary ad hoc wireless connection as described in the following steps. Please note that because this is a fairly complex process, we do not recommend it unless it is not possible to use a wired connection.

a.Disconnect your PC and the Serial Device Server from your network, and temporarily set the PC settings as follows:

∙IP address: 192.0.0.191

∙Wireless Mode: Ad Hoc (sometimes referred to as Peer-to-Peer)

∙Channel: 11

∙SSID (or wireless network name): serserv

b.Power on the PC and the Serial Device Server. You can connect to the Serial Device Server by specifying its default IP address of 192.0.0.192 using a web browser as described in the next section. When you have connected to the Serial Device Server, you must then change the IP address and enter the required wireless networking parameters using either the web browser interface or the internal command console (see next two sections) for operation on your wireless network.

c.After you complete the entire Serial Device Server configuration process, you must set your PC back to its original network settings.

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Using a Web Browser to Configure the Serial Device Server

After you have entered an IP address into the Serial Device Server, you can use any standard web browser to access the internal web pages for configuring the Serial Device Server. Simply specify the IP address of the Serial Device Server in your browser and then follow the steps below:

IMPORTANT: You must click the Submit button when you have finished configuring an internal web page. If you do not do this, your changes will not be saved.

1. When you have connected to the Serial Device Server, you will get the Server Info page. Click Login on the left side of the screen.

2. Enter the password access and press

Submit.

3. You will return to the Server Info page, but new options will be listed on the left side of the screen. Click on TCP/IP.

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If you used DHCP, verify that the IP address is correctly set. If you used the default 192.0.0.192 IP address, you MUST change it to a new valid IP address. If necessary, change the Subnet Mask and Gateway. It is generally not necessary to change the other parameters on this page (refer to Chapter 5 for advanced configuration information.

Note that on-line help information is available on every configuration page.

Click the Submit button at the bottom of the window (you may need to scroll) to save your changes.

NOTE: If you are using DHCP on your network, the SX-

500 should have acquired valid IP settings at this point and no further configuration is necessary. However, for some installations, a static IP address is preferred. If your DHCP server does not allow the SX-500 to keep its assigned IP address permanently, then you must manually assign an IP address. In this case, use a static IP address outside the range reserved for DHCP (see your DHCP server documentation for details). To assign a static IP address, select Set Permanent as the IP Address Resolution, and assign a valid static IP address for your network. Click on OK to save the new settings.

4. Click Wireless on the left side of the screen to configure the 802.11a/b/g wireless settings (for WLAN models only; skip to the next section if you have an Ethernet model). To operate on an 802.11a/b/g network, the Serial Device Server configuration must be configured with the wireless configuration and security parameters required to allow the Serial Device Server to communicate over your wireless network (check with your network administrator if you do not know these parameters).

∙ Select either Infrastructure (if you are using an access point) or Ad Hoc (point-to-point) as the wireless mode

∙ Enter the SSID for your network

∙ If you are using Ad Hoc, select the RF channel (not required for infrastructure)

The other parameters on this page do not normally need to be changed (refer to Chapter 5 for information on advanced configuration).

Click the Submit button at the bottom of the window (you may need to scroll) to save your changes.

Now click Configure Network Security to configure the wireless security parameters.

Page 16	Silex	Configuring the Serial Device Server
	Part Number 140-00188-210A