Multitech ProxyServer MTPSR2-201 User manual

Model MTPSR2-201
User Guide

User Guide
88301800 Revision A
ProxyServer with 56K DSU (Model No MTPSR2-201)
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 © 1998, 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
AManual released. Software version 2.01.All pages at revisionA.
(9/21/98) 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.
TRADEMARK
Trademark of Multi-Tech Systems, Inc. is the Multi-Tech logo.
Windows is a registered trademark of Microsoft.
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
[phone] or [phone]
Fax [phone]
Tech Support [phone]
InternetAddress: http://www.multitech.com
Fax-Back [phone]

Contents
Chapter 1 - Introduction and Description
Introduction ................................................................................................................................................ 6
Preview of this Guide ................................................................................................................................. 6
Front Panel Description.............................................................................................................................. 8
Back Panel Description .............................................................................................................................. 9
RS232/V.35 Connector ........................................................................................................................ 9
56K DSU Connector ............................................................................................................................ 9
10Base-T (Ethernet) Connector........................................................................................................... 9
Command Connector........................................................................................................................... 9
Power Connector ................................................................................................................................. 9
Specifications ........................................................................................................................................... 10
Ethernet Port...................................................................................................................................... 10
56K DSU Port .................................................................................................................................... 10
Command Port................................................................................................................................... 10
WAN Link ........................................................................................................................................... 10
Electrical/Physical.............................................................................................................................. 10
Chapter 2 - Installation
Safety Warnings ....................................................................................................................................... 12
Unpacking your ProxyServer ................................................................................................................... 12
8-Position DIP Switch............................................................................................................................... 13
V.35 Shunt Procedure .............................................................................................................................. 13
Cabling Your ProxyServer ........................................................................................................................ 15
Chapter 3 - Software Loading and Configuration
Loading the Proxy Server Software ......................................................................................................... 18
Chapter 4 - Proxy Server Software
Introduction .............................................................................................................................................. 24
Before You Begin ..................................................................................................................................... 24
Proxy Server Configuration ...................................................................................................................... 26
TypicalApplication.................................................................................................................................... 27
Adding an Optional DCE Device .............................................................................................................. 29
Enabling Multi-Link PPP........................................................................................................................... 31
Adding ProxyApplications........................................................................................................................ 32
Enabling the DHCP Server....................................................................................................................... 33
Enabling Virtual Servers........................................................................................................................... 34
Applications.............................................................................................................................................. 35
Statistics................................................................................................................................................... 35
Diagnostics............................................................................................................................................... 36
Scripting ................................................................................................................................................... 36
Chapter 5 - Remote Configuration and Management
Introduction .............................................................................................................................................. 38
Modem-Based Remote Configuration Procedure..................................................................................... 38
LAN-Based Remote Configuration Procedure ......................................................................................... 40
Windows Sockets Compliant TCP/IP Stack....................................................................................... 40
Remote Management ............................................................................................................................... 42
Telnet ................................................................................................................................................. 42
WEB Management............................................................................................................................. 45
iii

Chapter 6 - Warranty, Service and Tech Support
Introduction .............................................................................................................................................. 48
Limited Warranty ...................................................................................................................................... 48
On-line Warranty Registration............................................................................................................ 48
Tech Support ............................................................................................................................................ 49
Recording ProxyServer Information................................................................................................... 49
Service ..................................................................................................................................................... 50
The Multi-Tech BBS ................................................................................................................................. 51
To Log on to the Multi-Tech BBS........................................................................................................ 51
To Download a File ............................................................................................................................ 51
About CompuServe.................................................................................................................................. 52
About the Internet..................................................................................................................................... 52
About the Multi-Tech Fax-Back Service ................................................................................................... 52
Appendixes
AppendixA- TCP/IP (Transmission Control Protocol/Internet Protocol) Description............................... 54
Appendix B - Scripting.............................................................................................................................. 57
Index
iv

Chapter 1 - Introduction and Description

6
DSU ProxyServer User Guide
Introduction
Welcome to Multi-Tech's new DSU ProxyServer, model number MTPSR2-201, a single, secure
gateway that provides multiple LAN users with high performance Internet access over a leased
line. The DSU ProxyServer functions as a TCP/IP proxy server that resides on the outer edge of
your firewall and provides up to 56K of bandwidth to LAN users. The DSU ProxyServer features
a 10BaseT port for local LAN connection, a command port for configuration, a 56K bps DDS 4-
wire WAN connection, and a RS232 port for an optional Data Communications Equipment (DCE)
device (i.e., external modem, T1 CSU, etc.). System management is provided through the
command port using bundled Windows® software which provides easy-to-use configuration
menus.
The MTPSR2-201 also supports dial-in Remote Access Server (RAS) when the WAN 2 port is
configured to support it. Refer to the Chapter 4, ProxyServer Software, and your on-line help
system for more details on RAS.
RD TD CL LK RD TD CD NS DS RD TD CD
V35
Figure 1-1. DSU 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
Chapter 1 describes the ProxyServer. Front panel indicator, and back panel connector
descriptions are provided. In addition, a list of relevant specifications is provided at the end of the
chapter.
Chapter 2 - Installation
Chapter 2 provides information on unpacking and cabling your ProxyServer. The installation
procedure describes each cable connection.
Chapter 3 - Software Loading and Configuration
Chapter 3 provides instructions for software loading and initial configuration. The ProxyServer
software diskettes are Windows® based. Later chapters, as well as your on-line help program will
describe the ProxyServer software in more detail.
Chapter 4 - ProxyServer Software
Chapter 4 describes the ProxyServer software package designed for the Windows ®
environment. This chapter describes the ProxyServer software from an applications standpoint,
and in so doing, not every screen is shown, nor is each field within a screen defined. For
explanations and parameters of each field within a dialog box please refer to the on-line help
system provided within the software.

7
Chapter 1 - Introduction and Description
Chapter 5 - Remote Configuration and Management
Chapter 5 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 5 also describes typical
client applications (i.e., Telnet and Web-based management) used for remote configuration of the
ProxyServer.
Chapter 6 - Warranty, Service and Tech Support
Chapter 6 provides instructions on getting service for your ProxyServer at the factory, a
statement of the limited warranty, information about our Internet presence and user bulletin board
service, and space for recording information about your ProxyServer prior to calling Multi-Tech’s
Technical Support.
Appendixes
AppendixA- Transmission Control Protocol/Internet Protocol (TCP/IP) Description
Appendix B - Scripting

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DSU ProxyServer User Guide
Front Panel Description
The front panel, shown in Figure 1-2, contains three groups of LEDs that provide the status of the
Ethernet connection, 56K DSU port, WAN port, and general status of the ProxyServer. The
Ethernet LEDs indicate the status LAN activity, the 56K DSU LEDs indicate the status of the
internal DSU port (WAN 1), and the WAN Link LEDs indicate the status of the external DCE
device (WAN 2). There are also two LEDs which indicate whether the self test passed or failed
(Fail) and if the power On/Off switch on the back of the ProxyServer is turned On (Power).
RD TD CL LK RD TD CD NS OS RD TD CD
V35
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 detected on the Ethernet link.
LNK Link indicator lights when the ProxyServer is connected to the local area network.
56K DSU
RD Receive Data indicator blinks when packets are being received from the wide area
network.
TD Transmit Data indicator blinks when packets are being transmitted to the wide area
network.
CD Carrier Detect indicator lights when a carrier signal is detected on the WAN link.
NS No Signal indicator lights when the ProxyServer is unable to detect a signal on the DSU
(WAN 1) port.
OS Out of Service indicator lights when the DSU port is out of service.
WAN Link
RD Receive Data indicator blinks when packets are being received from the wide area
network.
TD Transmit Data indicator blinks when packets are being transmitted to the wide area
network.
CD Carrier Detect indicator lights when a carrier signal is detected on the WAN link.
V35 V.35 indicator lights when internal shunt is set for V.35 operation.
Fail
The Error indicator lights when the ProxyServer is booting or downloading setup.
Power
The Power indicator lights when power is applied to the ProxyServer.

9
Chapter 1 - Introduction and Description
Back Panel Description
The cable connections for the ProxyServer are made at the back panel. Connectors include
Power, Command Port, 10BASET (Ethernet), 56K DSU and RS232/V.35. The cable connectors
are shown in Figure 1-3 and defined in the following groups.
10BASET COMMAND56K DSU POWER
ON
OFF
RS232/V.35
Figure 1-3. Back Panel
RS232/V.35 Connector
The RS232/V.35 (DB-25) connector is used to connect the ProxyServer to an external modem,
DSU, or other Data Communications Equipment (DCE). This connection can be either RS232C
(default) or V.35. If the connection is V.35, then the shunt must be moved from the default RS232
position to the V.35 position (for details on this procedure, refer to Chapter 2 - V.35 Shunt
Procedure).
56K DSU Connector
The 56K DSU connector is used to connect the ProxyServer to a DDS network connection. This
connector is an RJ45/48 jack.
10Base-T (Ethernet) Connector
The Ethernet 10Base-T connector is used to connect the ProxyServer to a LAN using unshielded
twisted cable. This connector is an RJ45/48 jack.
Command Connector
The Command connector is used to configure the ProxyServer using a PC with a serial port and
running Windows® software. The Command connector is an RJ45/48 jack and a short adapter
cable is provided to convert to a standard serial port DB-25 female connector.
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.Aseparate power cord is connected to the
power supply and the liveAC grounded outlet.

10
DSU ProxyServer User Guide
Specifications
• Protocols - Point-To-Point Protocol (PPP), Multilink Point-To-Point Protocol (MLPPP),
and Serial Line Internet Protocol (SLIP)
• One 1 Meg by 32 byte at 70 nanosecond SIMM is 4Mb DRAM
Caution: SIMM speed and size cannot be mixed
• One Megg of flash memory
Ethernet Port
• Single Ethernet Interface - 10Base-T (twisted pair) RJ-45 connector.
56K DSU Port
• Single 56K bps DDS 4-wire RJ45/48 connector
Command Port
• Single 19.2K bps asynchronous Command Port using a short RJ-45 to DB-25 cable with
a DB-25 female connector
WAN Link
• One 115200 bps async or T1 (1.544 M bps) sync link using a DB-25 (RS232/V.35)
female connector
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)

Chapter 2 - Installation

12
DSU ProxyServer User Guide
Safety Warnings
1. Never install telephone wiring during a lightning storm.
2. Never install telephone jacks in wet locations unless the jack is specifically designed for
wet locations.
3. Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
4. Use caution when installing or modifying telephone lines.
5. Avoid using a telephone (other than a cordless type) during an electrical storm. There
may be a remote risk of electrical shock from lightning.
6. Do not use the telephone to report a gas leak in the vicinity of the leak.
Unpacking your ProxyServer
The shipping box contains the ProxyServer, external power supply, a plastic bag containing
cables, your Quick Start Guide, and three diskettes (i.e., the ProxyServer User Guide, and the
ProxyServer Software). 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 6 - Warranty, Service and Tech Support). If no damage is observed, place the
ProxyServer in its final location and perform the Cabling Procedure.
Save the shipping box in case reshipment is necessary.
RD TD CL LK RD TD CD NS DS RD TD CD V35
MADE IN U.S.A
MADE IN U.S.A
Figure 2-1. Unpacking

13
Chapter 2 - Installation
8-Position DIP Switch
The ProxyServer is equipped with a 8-position DIP switch. Figure 2-2 shows the DIP switch, and
the chart that follows details the default positions and other options.
56781234
Figure 2-2. 8-position DIP switch
Position 1: OPEN* (up) Normal Mode operation
Closed (down) Loopback Mode operation
Position 2: OPEN* (up) DDS clocking
Closed (down) Internal Clocking
Positions 3 - 8: Reserved for future use.
* Denotes Factory Default setting
Note: The DIP switch settings cannot be changed externally; you must remove the circuit board
from the chassis. Refer to the steps in the next section, V.35 Shunt Procedure, for instructions on
removing the circuit board.
V.35 Shunt Procedure
If you are using an external DCE device on the WAN 2 RS232/V.35 port, and the connection will
be a V.35 connection, the the interal shunt must be moved from the RS232C (default) position
prior to cabling and power-up. The following steps detail the procedures for switching the shunt.
Step Procedure
1 Ensure that the external power supply is disconnected from the ProxyServer.
2 Turn the ProxyServer over and remove the cabinet mounting screw from the chassis.
Front Panel Back Panel
Cabinet Mounting Screw
Figure 2-3. Cabinet Mounting Screw
3 Being sure to support the back panel, turn the ProxyServer right-side-up, tilt the back
panel down, and slide the circuit board out of the chassis.
4 Place the unit on a flat, grounded surface with the LED’s facing you.

14
DSU ProxyServer User Guide
5 Pry the shunt out of the RS232 position, and insert it in the V.35 position.
5678
V.35 Shunt Position
RS232C Shunt Position
Back Panel Connectors
8-Position DIP Switch
RAM Sockets
LEDs
Figure 2-4. Shunt Positions
Note: if you wish to make changes to the 8-position DIP switch, do so at this time. For
details on DIP switch settings, refer to the previous section, 8-Position DIP Swtich.
6 Align the board with the guide slots on the inside of the chassis and carefully slide the
board back into the chassis.
7 Being sure to support the back panel, turn the ProxyServer over again, and replace the
cabinet mounting screw.
8 Turn the ProxyServer right-side-up again and proceed to the nect section to connect the
cables.

15
Chapter 2 - Installation
Cabling Your ProxyServer
Cabling your ProxyServer involves making the proper Power, Command Port, Ethernet and 56K
DSU connections. An optional WAN connection is provided to connect to an external WAN
device. Figure 2-5 shows the back panel connectors and the associated cable connections.
Power Connection
PC Connection
10BASET COMMAND56K DSU POWER
ON
OFF
RS232/V.35
Ethernet Connection
DDS WAN Connection
DCE Connection
Figure 2-5. Cable Connections
The following steps detail the procedures for connecting the cables to your ProxyServer.
Note: before proceeding with this procedure, verify that the DIP switch has been set to the
proper clocking method. Refer to the 8-Position DIP Switch section, earlier in this chapter.
1. Connect one end of the power supply to a liveAC outlet and connect the other end to the
ProxyServer as shown in Figure 2-2. The power connector is a 6-pin circular DIN
connector.
2. Connect the ProxyServer to a PC by using the short RJ-45 to DB-25 (female) cable
provided in your unit. Plug the RJ-45 end of the cable into the Command port of the
ProxyServer and the other end into the RS232 cable from the PC serial port. See Figure
2-2.
3. Connect one end of an RJ-45 (UTP) cable to the 10BASET connector on the back of the
ProxyServer. Connect the other end of the cable to your LAN.
4. If the RS232/V.35 connector on the ProxyServer is going to be connected to a DCE
device (i.e., external modem, CSU, etc.) connect one end of an RS232 or V.35 interface
cable to the RS232/V.35 connector on the back of the ProxyServer. Connect the other
end of this cable to the DCE device.
6. Turn on power to the ProxyServer by placing the ON/OFF switch on the back panel to
the ON position. Wait for the Fail LED on the ProxyServer to go OFF before proceeding.
This may take a couple of minutes to go OFF.
At this time your ProxyServer is completely cabled. Proceed to Chapter 3 - Software Loading
and Configuration,to load the Proxy Server software.

16
DSU ProxyServer User Guide

Chapter 3 - Software Loading and Configuration

18
DSU ProxyServer User Guide
Loading the Proxy Server Software
The following loading procedure does not provide every screen or option in the process of
installing the ProxyServer software. The assumption is that a technical person is doing the
installation and that a thorough knowledge of Windows and the software loading process is
understood. Additional information on the ProxyServer software is provided in Chapter 4 - Proxy
Server Software, as well as in the on-line help system provided with the software.
1. Run Windows on the PC connected to the Command Port.
2. Insert the ProxyServer diskette labeled Disk 1 into the disk drive on the PC connected to
the Command port.
3. Win3.1 users - access the setup program in the File Manager by clicking File | Run. In
the Run dialog box, type a:\setup or b:\setup (depending on the location of your floppy
disk drive) in the Command Line field and then click OK.
Win95 users - click Start | Run. In the Run dialog box click on the down arrow and
choose a:\setup or b:\setup (depending on the location of your floppy disk drive) in the
Command Line field and then click OK.
4. Follow the on-screen instructions to install your ProxyServer software.

19
Chapter 3 - Software Loading and Configuration
5. The following dialog box selects the COM port of your PC connected to the Command
port of the ProxyServer. From the Select Port window, click on the down arrow and
choose the COM port of your PC.
Click OK to continue.
6. The following screen appears.
Click Finish to continue.
7. The following screen appears.
Click Yes to download the default setup.

20
DSU ProxyServer User Guide
8. The IP Setup dialog appears.
8. Select the proper port from the Port Selection list.
By default, LAN is selected. Change the default IP Address and Net Mask to your
unique LAN address.
Highlight WAN 1, and choose either ISP Assigns Dynamic Address (default) to allow
the ISP to automatically assign the ProxyServer IP address and Net Mask, or disable ISP
Assigns Dynamic Address by clicking the check box, and statically assign the IP
Address and Net Mask.
If you wish to configure the WAN 2 port, highlight WAN 2 and either configure it as you
did with WAN 1, above, or click Remote Access to enable support of RemoteAccess
Server (RAS) on WAN port 2. If you enable Remote Access, you must assign the
address of the remote server in the Remote Address field.
When you have completed the IP port configuration, click OK to continue.
9. The Default WAN Link(s) Setup dialog is displayed.
If you wish to use MultiLink PPP, click the MultiLink PPP (MLPPP) checkbox to enable
MLPPP. Please note that the User Name and Password for both WAN 1 and WAN 2
must be identical to use MLPPP.
10. In the WAN 1 (DSU) group, enter the User Name and Password for WAN port 1, as
agreed upon with your ISP. Click on the Enable check box if you wish to disable WAN 1.
11. In the WAN 2 group, configure the parameters of the external DCE device attached to
the WAN 2 port. If the external device is a modem, click on the drop down list in the
Modem Type field and choose the proper modem type. Enter the telephone number of
the ISP in the Dial Number field. Assign the User Name and Password for WAN port 2,
as agreed upon with you ISP.
Note: If you enabled MLPPP in step 9, make sure that the User Name and Password for
WAN 2 is the same to the User Name and Password you assigned to WAN 1. In order to
make use of MLPPP, both WAN ports must have identical entries in these fields.
If you do not wish to use the WAN 2 port, click on the Enable check box disable WAN 2.
When you are finished, click OK to continue with the installation.