Multitech ProxyServer MTPSR3-200 User manual

Internet Access for
LAN-Based Users
Model MTPSR3-200
User Guide

User Guide
S0000004 RevisionA
ProxyServer 200-Series (Model MTPSR3-200)
This publication may not be reproduced, in whole or in part, without prior expressed written permission from
Multi-Tech Systems, Inc.All rights reserved.
Copyright © 1999, by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and
specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this publication and to make changes from
time to time in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any person or
organization of such revisions or changes.
Record of Revisions
Revision Description
A Manual released.All pages at revisionA.
(10/22/99)
Patents
This Product is covered by one or more of the following U.S. Patent Numbers: 5.301.274; 5.309.562;
5.355.365; 5.355.653; 5.452.289; 5.453.986. Other Patents Pending.
TRADEMARKS
The Multi-Tech logo and ProxyServer are registered trademarks or trademarks of Multi-Tech Systems, Inc.
Adobe andAcrobat are trademarks ofAdobe Systems Incorporated.
Microsoft, Windows, and Windows NT are registered trademarks or trademarks of Microsoft Corporation in
the United States and/or other countries.
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
[phone] or [phone]
Fax [phone]
Tech Support [phone]
BBS [phone] or [phone]
InternetAddress:http://www.multitech.com

iii
Contents
Chapter 1 - Introduction and Description
Introduction .......................................................................................................................................................6
Preview of this Guide ........................................................................................................................................6
Front Panel........................................................................................................................................................8
Back Panel ........................................................................................................................................................9
Link 1 (2 and 3) Connector .........................................................................................................................9
Ethernet 10Base-T Connector ....................................................................................................................9
Ethernet 10Base-2 Connector ....................................................................................................................9
Command Connector..................................................................................................................................9
Power Connector ........................................................................................................................................9
Specifications ..................................................................................................................................................10
Ethernet Port.............................................................................................................................................10
Command Port..........................................................................................................................................10
WAN Links ................................................................................................................................................10
Electrical/Physical.....................................................................................................................................10
Requirement .............................................................................................................................................10
Chapter 2 - Installation
Introduction .....................................................................................................................................................12
Unpacking .......................................................................................................................................................12
Cabling ............................................................................................................................................................13
Adding RAM ....................................................................................................................................................14
Chapter 3 - Software Loading and Configuration
Loading your Software ....................................................................................................................................16
IP Wizard Setup........................................................................................................................................19
WAN Link(s) Setup ...................................................................................................................................20
Setting Up Your Remote User Database.........................................................................................................22
Chapter 4 - ProxyServer Software
Introduction .....................................................................................................................................................26
Before You Begin ......................................................................................................................................26
Proxy Setup.....................................................................................................................................................27
Changing IP Parameters .................................................................................................................................28
Changing WAN Port Parameters ....................................................................................................................31
Link Usage Control Group ........................................................................................................................31
Dynamic BandwidthAllocation..................................................................................................................32
MLPPP......................................................................................................................................................36
Port Type ..................................................................................................................................................38
Changing Internet Parameters ........................................................................................................................39
Enabling the DHCP Server..............................................................................................................................41
Adding ProxyServer Applications ....................................................................................................................42
Enabling the Virtual Server..............................................................................................................................44
Enabling Remote Servers ...............................................................................................................................47
Telnet/TFTP ..............................................................................................................................................47
WEB Server..............................................................................................................................................47
Running Diagnostics .......................................................................................................................................49
Running Statistics ...........................................................................................................................................50

iv
Chapter 5 - Client Setup
Introduction .....................................................................................................................................................52
Before you Begin.............................................................................................................................................52
Configuring in Windows 98/95.........................................................................................................................53
Installing TCP/IP (Win98/95) ..........................................................................................................................60
Configuring in Windows NT.............................................................................................................................61
Installing TCP/IP (WinNT) ..............................................................................................................................67
Chapter 6 - RAS Dial-Out Redirector
Introduction .....................................................................................................................................................70
Installing and Configuring the WINMCSI Modem-Sharing Software ...............................................................70
Running the WINMCSI Workstation Software.................................................................................................76
Chapter 7 - Remote Configuration
Introduction .....................................................................................................................................................80
Remote Configuration ...............................................................................................................................80
Chapter 8 - ProxyServer Management
Introduction .....................................................................................................................................................84
ProxyServer Telnet Server Menu ....................................................................................................................84
Dial-Out ...........................................................................................................................................................85
ProxyServer Management ..............................................................................................................................85
ProxyServer Configuration ..............................................................................................................................86
Remote User Database...................................................................................................................................86
Web Browser Management.............................................................................................................................87
Chapter 9 - Service, Warranty and Tech Support
Introduction .....................................................................................................................................................90
Limited Warranty .............................................................................................................................................90
On-line Warranty Registration...................................................................................................................90
Tech Support ...................................................................................................................................................91
Recording ProxyServer Information..........................................................................................................91
Contacting Tech Support via E-mail..........................................................................................................91
Service ............................................................................................................................................................92
The Multi-Tech BBS ........................................................................................................................................93
To log on to the Multi-Tech BBS................................................................................................................93
To Download a file.....................................................................................................................................93
About the Internet............................................................................................................................................94
Ordering Accessories ......................................................................................................................................94
Appendices
AppendixA- Cabling Diagrams.......................................................................................................................96
Appendix B - Script Commands ......................................................................................................................97
Appendix C - Regulatory Information ..............................................................................................................99
Appendix D - AT Command Summary ..........................................................................................................102
Appendix E - TCP/IP .....................................................................................................................................109
Glossary of Terms
Index

Chapter 1 - Introduction and
Description

ProxyServer User Guide
MTPSR3-2006
Introduction
Welcome to Multi-Tech’s new ProxyServer 200-Series, model MTPSR3-200, a single, secure
gateway that provides multiple LAN users with high performance Internet access. The ProxyServer
functions as a TCP/IP proxy server that resides on the outer edge of your firewall and provides up to
150K of bandwidth to LAN users. The MTPSR3-200 supports dial in RemoteAccess Server (RAS),
RAS Dial-Out Redirector, and can act as an asynchronous Gateway.
The MTPSR3-200 ProxyServer features a 10Base-T or 10Base-2 port for local LAN connection,
Command Port for configuration, and three internal V.90/K56flexTM modems* with Multilink Point-to-
Point Protocol (MLPPP) allowing for a bandwidth up to 150 Kbps.
The MTPSR3-200 supports client and site filtering, dial-in remote access from a PPP client, includes
NetworkAddress translation (NAT) allowing corporate web, FTP, and mail servers access from the
Internet, dials on-demand for link establishment as Internet services are requested, and handles
HTTP, FTP, POP3, DNS, NNTP, TFTP, IRC, SMTP, Gopher, Finger, rlogin, and Citrix requests.
Optionally, your MTPSR3-200 bonds bandwidth on a single account for up to three modems using
MLPPP technology.
System management is provided through the command port using bundled Windows®software which
provides easy-to-use configuration menus.
Figure 1-1. ProxyServer
Preview of this Guide
This guide describes the ProxyServer and tells you how to install and configure the unit. The
information contained in each chapter is as follows:
Chapter 1 - Introduction and Description
This chapter describes the ProxyServer 200-Series. It defines the front panel indicators, back panel
connections, lists technical specifications, and describes a typical Internet configuration.
Chapter 2 - Installation
This chapter provides information on unpacking and cabling your ProxyServer. The installation
procedure describes each cable connection which includes connecting the power cord, Command
port, LAN, and the WAN.
Chapter 3 - Software Loading and Configuration
This chapter details the software loading which configures the IP port and default WAN links. The
ProxyServer software is Windows-based. Each field within a dialog box that is alterable is described.
*Though this modem is capable of 56 Kbps download performance, line impairments, public telephone
infrastructure and other external technological factors currently prevent maximum 56 Kbps connections.

Chapter 1 - Introduction and Description
MTPSR3-200 7
Chapter 4 - ProxyServer Software
This chapter describes the ProxyServer 200-Series software package designed for the Windows
environment. The ProxyServer Program Group has five icons that allow for ProxyServer
configuration, Download Default Setup, Download Firmware Update, Configuration Port Setup, and
WAN device configuration from the program manager. Each field within a dialog box is explained in
detail and when fields relate to each other, that relationship is explained.
Chapter 5 - Client Setup
This chapter provides information for enabling and configuring multiple Windows 98/95 or NT®PC
users for Internet access via the ProxyServer.
Chapter 6 - RAS Dial-Out Redirector
This chapter describes how Multi-Tech’s Remote Access Server for Microsoft network users enables
users to dial out and fax out through the MTPSR3-200. It provides information on installing and
configuring the WINMCSI modem-sharing software.
Chapter 7 - Remote Configuration
This chapter provides procedures for changing the configuration of a remote ProxyServer. Remote
configuration allows you to change the configuration of a unit by simply connecting two modems
between the two ProxyServers and remotely controlling the unit.
Chapter 8 - ProxyServer Management
This chapter describes typical Telnet Client applications (e.g., ProxyServer configuration and WAN
device configuration).
Chapter 9 - Service, Warranty and Tech Support
This chapter provides instructions on getting service for your ProxyServer at the factory, a statement
of the limited warranty, information about Multi-Tech’s user bulletin board service, and space for
recording information about your ProxyServer prior to calling Multi-Tech’s Technical Support.

ProxyServer User Guide
MTPSR3-2008
Front Panel
The front panel contains three groups of LEDs that provide the status of the Ethernet LAN
connection, link activity, and general status of the ProxyServer. The Ethernet LAN LEDs display the
activity of the LAN in whether the ProxyServer is connected to the LAN, transmitting or receiving
packets, and if a collision is in progress. The Link LEDs display the status of the three links that can
be connected to the ProxyServer, e.g., whether a link is ready to transmit or receive serial data or if
an external communications device with a V.35 interface is connected to the ProxyServer. The
General LEDs indicate whether the self test passed or failed (Note that the Fail LED is lit during boot-
up) and if the power On/Off switch on the back of the ProxyServer is turned On.
Figure 1-2. Front Panel
Ethernet
RD Receive Data indicator blinks when packets are being received from the local area
network.
TD Transmit Data indicator blinks when packets are being transmitted to the local area
network.
CL Collision indicator lights when a collision is in progress; that is, when two nodes are
transmitting packets at the same time.
LK Link indicator lights indicating that the ProxyServer is connected to the local area
network.
Links (1, 2, and 3)
RD Receive Data indicator blinks when the link is receiving data.
TD Transmit Data indicator blinks when the link is transmitting data.
CD Carrier Detect indicator lights when the link detects a carrier signal.
TR Terminal Ready indicator blinks when the link is ready to transfer data.
General
FAIL Fail indicator lights when a self test fails to complete as expected and during boot-up.
POWER The power indicator lights when the On/Off Switch is in the ON position.

Chapter 1 - Introduction and Description
MTPSR3-200 9
Back Panel
The cable connections for the ProxyServer are made at the back panel. Three groups of cables are
used on the ProxyServer, the Command Port, Link 1, 2, and 3 (RJ-11 jacks), and Ethernet. The cable
connections are shown in Figure 1-2 and defined in the following groups.
LINK3 LINK2 LINK1 ETHERNET COMMAND POWER
10BASET 10BASE2
ON
OFF
Ethernet Connectors:
10-BASE T (UTP RJ45)
and 10 BASE 2 (BNC Coax)
RJ11 LINK Connectors (3) Power Connector:
6-pin Cirucular DIN
RJ45 Command
Port Connector
Figure 1-3. Back Panel
Link 1 (2 and 3) Connector
The Link 1, 2, and 3 connectors are used to connect the ProxyServer to a WAN. They are RJ-11
connectors.
Ethernet 10Base-T Connector
The Ethernet 10Base-T connector is used to connect the ProxyServer to a 10 MB LAN using
unshielded twisted cable. This connector is an RJ-45 jack.
Ethernet 10Base-2 Connector
The Ethernet 10Base-2 connector is used to connect the ProxyServer to a LAN using thin Coax
cable.
Note: The link light for Ethernet does not light when using 10Base-2.
Command Connector
The Command connector (CMD) is used to configure the ProxyServer using a PC with a serial port
and running Windows software. The Command connector is an RJ-45 jack and is used with the RJ-
45 to DB-9 command port cable provided with your ProxyServer. The command port is only used to
connect the ProxyServer directly to the PC for local configuration and management.
Note: If your PC has a DB-25 (25-pin) serial port connector, you will need to obtain a DB-9 (9-pin,
male) to DB-25 adapter. Connect the DB-25 end of this adapter to the serial port on your PC, and
then connect the DB-9 (9-pin, female) end of the Command Port cable to the adapter.
Power Connector
The Power connector is used to connect the external power supply to the ProxyServer. The Power
connector is a 6-pin circular DIN connector. A separate power cord is connected to the power supply
and the liveAC grounded outlet.

ProxyServer User Guide
MTPSR3-20010
Specifications
• Protocols: Point-To-Point Protocol (PPP), MultiLink Point-To-Point Protocol (MLPPP), and
Serial Line Internet Protocol (SLIP)
• Ethernet Lan Interface: 10Base-T (twisted pair) or 10Base-2 (ThinNet) BNC connector
• WAN Interface: 3 asynchronous Links (RJ-11) jacks
• Command Port: 19.2 KbpsAsynchronous
• One 1 meg by 32 bytes at 70 nanoseconds SIMM is 4 mb DRAM
Caution: SIMM speed and size cannot be mixed
Ethernet Port
• One Ethernet Interface - 10Base-T (twisted pair) RJ-45 jack or 10Base-2 ThinNet BNC
connector
Command Port
• Single 19.2 Kbps asynchronous Command Port using a short RJ-45 to DB-9 cable to
connect directly to PC
WAN Links
• Three internal V.90/K56flexTM modems* with MultiLink Point-To-Point Protocol for a bandwidth
up to 150 Kbps
Electrical/Physical
• Voltage - 115 VAC (Standard), 240 Volts AC (Optional)
• Frequency - 47 to 63 Hz
• Power Consumption - 10 Watts
• Dimensions - 1.625" high x 6" wide x 9" deep
5.63cm high x 22.34cm wide x 33.51cm deep
• Weight - 2 pounds (.92 kg)
Requirement
• PC with Windows 3.1x or Windows 98/95 and Windows NT, and one serial COM port to
connect to the Command Port of the ProxyServer
*Though this modem is capable of 56 Kbps download performance, line impairments, public telephone
infrastructure and other external technological factors currently prevent maximum 56 Kbps connections.

Chapter 2 - Installation

ProxyServer User Guide
MTPSR3-20012
Introduction
This chapter describes how to unpack and cable your ProxyServer. The unpacking section describes
the contents of the shipping box and the installation procedure describes each cable connection and
shows where that cable is connected to the ProxyServer.
Unpacking
The shipping box contains:
• ProxyServer (1)
• Quick Start Guide (1)
• ProxyServer CD with the ProxyServer Software and User Guide in AdobeAcrobatTM format
(1)
• RJ-11 to phone jack cables (3)
• external power supply (1)
• RJ-45 to DB-9 Command Port cable (1)
Inspect the contents for signs of any shipping damage. If damage is observed, do not power up the
unit, contact Multi-Tech’s Technical Support for advice (refer to Chapter 9). If no damage is observed,
place the ProxyServer in its final location and perform the cabling procedures that follow.
Save the shipping box in case reshipment is necessary.
MADE IN U.S.A
MADE IN U.S.A
www.multitec .com
Figure 2-1. Unpacking

Chapter 2 - Installation
MTPSR3-200 13
Cabling
The cable connections include up to three WANs, two types of connections for your Ethernet, a short
adapter cable to connect to your PC for software loading, and finally your power connection. If
additional RAM needs to be added, refer to the “Adding RAM” section. Figure 2-2 shows the
ProxyServer’s external connections.
LINK3 LINK2 LINK1 ETHERNET COMMAND POWER
10BASET 10BASE2
ON
OFF
WAN Connections
Power Connection
PC Connection
Ethernet Connection
Figure 2-2. Back Panel Connections
1. Connect the external power supply to the ProxyServer and a live AC outlet. The POWER
connector on the back panel of the ProxyServer is a 6-pin circular DIN connector.
2. Connect a PC running Windows®to the COMMAND port on the back panel of the ProxyServer.
Use the short RJ-45 to DB-9 cable provided with your ProxyServer to connect directly to your
PC, or to the serial cable from your PC.
3. Configure the ProxyServer for your application using the procedures in Chapter 3.
4. Connect a network cable to either the ETHERNET 10BASE-T (RJ-45) or a coax cable to the
10BASE-2 (BNC) port on the back panel of the ProxyServer. Connect the other end of the cable
to the network.
5. Connect an RJ-11 phone cable for the first link connection to the LINK 1 port on the back panel of
the ProxyServer. Connect the other end of the cable to the line jack. Connect the second RJ-11
phone cable to the LINK 2 port on the ProxyServer and the other end to the second line jack.
Connect the third RJ-11 phone cable to the LINK 3 port and to the third line jack.

ProxyServer User Guide
MTPSR3-20014
Adding RAM
Asecond SIMM connector is provided for adding RAM to the ProxyServer. Do the following.
Note: Memory should only be added when required by Multi-Tech Systems.
1. Ensure that the external power supply is disconnected from the ProxyServer.
2. Turn the ProxyServer upside down and remove the cabinet mounting screw (1) located at the
center back of the cabinet (Refer to Figure 2-3).
Cabinet Mounting Screw
(center, back)
Figure 2-3. Cabinet Mounting Screws
3. Turn the ProxyServer right side up and tilt the back down slightly and the base will slide out of the
cabinet.
4. Place the unit in a position where the LEDs are facing you.
5. Slant the new SIMM at a 45 0angle to the back of the base and align the centering notch of the
SIMM with the center tab on the SIMM connector.
6. Gently press down on the ends of the SIMM until the two latches latch over the SIMM and the
two vertical pins enter the holes in the SIMM (Refer to Figure 2-4).
Figure 2-4. Installing a SIMM
7. Slide the base back into the cabinet with the LEDs facing toward the front and the back side
grounding tabs pressing against the side of the cabinet.
8. Turn the ProxyServer upside down and replace the cabinet mounting screw (1) located toward
the front of the cabinet.
9. Turn the ProxyServer right side up and connect the cables.

Chapter 3 - Software Loading
and Configuration

ProxyServer User Guide
MTPSR3-20016
Loading your Software
The ProxyServer Install Software and User Guide are provided on the ProxyServer CD-ROM. The
CD-ROM is auto-detectable and should start automatically when inserted into your CD-ROM drive.
After you have configured your ProxyServer, you can install the User Guide on your hard drive (for
later viewing or printing) by clicking the Install Manuals icon on the Installation CD screen.
1. Before inserting the ProxyServer CD-ROM into your CD-ROM drive, determine whether you will
configure your ProxyServer over the LAN or directly from a local PC. For configuring over a
network, your PC must first be configured for network communications (i.e., TCP/IP stack must
be installed) and both the PC and the ProxyServer must be on the same physical LAN segment.
If you need to load the TCP/IP stack, refer to Chapter 5 - Windows Client Setup.
2. Insert the ProxyServer CD-ROM into a CD-ROM drive on your local PC. The CD-ROM should
start automatically. However, it may take 10 to 20 seconds for the Multi-Tech Installation CD
screen to appear.
The Installation CD screen is displayed.
If the Multi-Tech Installation CD Screen does not appear automatically, click My Computer, then
right-click the CD-ROM drive icon and click Autorun.
3. When the Multi-Tech Installation CD Screen appears, click the Install Software icon.
4. The ProxyServer Setup Welcome screen is displayed.
Press Enter or click Next> to continue.

Chapter 3 - Software Loading and Configuration
MTPSR3-200 17
5. The Choose Destination Location dialog box is displayed. Follow the on-screen instructions to
install your ProxyServer software.
You can either choose the Destination Location of your ProxyServer software or select the
default destination by clicking Next>. If you click Browse, you can select a different destination
folder for your ProxyServer software; however, it is recommended that you accept the default
folder, C:\Proxy.210.
6. The Select Program Folder dialog box enables you to name the Program Folder for the
ProxyServer files. You can select the default name, ProxyServer 2.10, or name it anything you
like.
When finished, click Next> to continue.
7. The ProxyServer Setup dialog box asks if you are configuring your ProxyServer through the
COM port of your PC or over the LAN (IP).
If you are configuring the ProxyServer over your network, click OK to continue.
If you need to configure your ProxyServer through the Command port, follow the instructions in
the dialog box for selecting the COM Port, then click OK to continue.

ProxyServer User Guide
MTPSR3-20018
8. The Setup Complete dialog box is displayed.
Click Finish to continue.
9. The “Do you want to download wizard setup?” screen is displayed.
The Wizard Setup screens enable you to input basic configuration information needed to
configure your ProxyServer. These screens guide you through the process of entering your LAN
address, net mask information and your WAN, DHCP Server, and Domain Name Server entries.
All entries display in their respective dialog boxes when accessed from the Main menu.
Click Yes to download the wizard setup; clicking No takes you to the program group (icons)
where you can choose any of eight ProxyServer utility programs.
10. If you are configuring your ProxyServer over the network, the IP Address Reconfiguration
dialog box is displayed showing the default IP and MAC addresses of all detected ProxyServers
in the top window and a suggested IP Address in the lower window.
From the top window, select the ProxyServer you want to configure, then verify the Suggested IP
Address in the lower window.
The IPAddress is only a proposed address. You must verify that this suggested address does
not conflict with the IP address of any other device currently on your network. If an address
conflict exists, change the contents of this field to assign a unique address to your ProxyServer.
Click OK when you are ready to continue.

Chapter 3 - Software Loading and Configuration
MTPSR3-200 19
IP Wizard Setup
The IP Wizard Setup dialog box guides you through the process of assigning LAN and WAN IP ports
address information, and provides an option to use the ProxyServer’s built-in DHCP Server if your
LAN is not already running a DHCP Server which assigns (automatically) client IP addresses. If you
choose to enable the built-in DHCP server, you are given the option of also enabling the Domain
Name Server.
11. Follow on-screen instructions to configure the IP Ports, DHCP Server, and Domain Name Server.
Note: If you plan to use the ProxyServer’s DHCP server, disable any other DHCP server
operating on the local/private LAN to prevent clients from receiving IP addresses from two
independent sources.
If necessary, obtain Primary and Secondary DNS IP addresses from the DNS tab under Network/
Protocol (or TCP/IP)/Properties or from your ISP.
12. Click the WAN 1 option in the Select Port window and the dialog box changes to provide WAN
Setup information.
Follow the on-screen instructions to configure WAN 1. If you choose to have one or all three
WAN ports configured for Remote Access, click the Remote Access to be enabled? check box,
then enter the remote workstation’s IP address in the Remote Address field. This is the IP
address that will be handed to remote clients.
Highlight WAN 2 and then WAN 3, in turn, to configure the other WAN ports.
Click OK when you are satisfied with the IP Wizard Setup and proceed to the Default WAN
Link(s) Setup screen.

ProxyServer User Guide
MTPSR3-20020
WAN Link(s) Setup
The Default WAN Link(s) Setup dialog box guides you through bonding the WAN ports together
(MLPPP), entering the phone number of the ISP, and entering your user name and password
negotiated with ISP for Internet access.
13. Determine if MultiLink PPP (MLPPP) is going to be enabled; i.e., all three WAN links bonded
together.
Note: When MLPPP is used, the Dial Number, User Name, and Password have to be the same
for all three WAN ports.
14. Click Dial Number for WAN 1 and enter the phone number supplied by your ISP for WAN 1. The
phone number can be a standard local number or it can include a long distance prefix.
15. Click the User Name for WAN 1 and enter your user name that you negotiated with your ISP for
WAN 1. The User Name can be up to 40 alphanumeric characters. The User Name is not case
sensitive.
16. Click the Password for WAN 1 and enter your password that you negotiated with your ISP for
WAN 1. The password can be up to 15 alphanumeric characters and may or may not be case
sensitive depending on your ISP.
17. Repeat the above three steps for WAN 2.
18. Repeat the above three steps for WAN 3.
19. Click the OK button to continue installing the software.
20. The Checking ProxyServer dialog box is displayed.
Click OK to proceed.