Multitech MTPSR1-120 manuale d’uso

Dual Ethernet ProxyServer Model MTPSR1-120 User Guide[...]

User Guide 88301500 Revision A Dual Ethernet ProxyServer (Model No MTPSR1-120) This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-T ech Systems, Inc. All rights reserved. Copyright © 1998, by Multi-Tech Systems, Inc. Multi-T ech Systems, Inc. makes no representations or warranties wit[...]

Contents Chapter 1 - Introduction and Description Introduction ................................................................................................................................................ 6 Preview of this Guide .......................................................................................................... ...........[...]

Chapter 5 - Remote Configuration and Management Introduction .............................................................................................................................................. 4 2 Modem-Based Remote Configuration Procedure ..................................................................................... 42 LAN-Based [...]

Chapter 1 - Introduction and Description[...]

6 Dual Ethernet ProxyServer User Guide Introduction Welcome to Multi-T ech's new Dual Ethernet ProxyServer , model number MTPSR1-120, a high speed Internet access device that provides firewall protection to your corporate (secured) LAN and allows Internet access to the Internet Services Network (public LAN) that resides outside the firewall. I[...]

7 Chapter 1 - Introduction and Description 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 explanat[...]

8 Dual Ethernet ProxyServer User Guide Front Panel Description The front panel, shown in Figure 1-2, contains four groups of LEDs that provide the status of the LAN connection, link activity , and general status of the ProxyServer . The Ethernet 1 and Ethernet 2 LEDs display the activity of the public and private LANs, in whether the ProxyServer is[...]

9 Chapter 1 - Introduction and Description Back Panel Description The cable connections for the ProxyServer are made at the back panel. In addition to the Power connector , Three groups of connectors are used on the ProxyServer: the Command Port, Ethernet 1 & 2 (10BASET) and RS232/V .35. The cable connections are shown in Figure 1-3 and defined[...]

10 Dual Ethernet ProxyServer User Guide Specifications • Protocols - Point-T o-Point Protocol (PPP), and Serial Line Internet Protocol (SLIP) Ethernet Ports • T wo Ethernet Interface - 10Base-T (twisted pair) RJ-45 connectors. Command Port • Single 19.2K bps asynchronous Command Port using a short RJ-45 to DB-25 cable with a DB-25 female conn[...]

Chapter 2 - Installation[...]

12 Dual Ethernet ProxyServer User Guide Safety W arnings 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 inte[...]

13 Chapter 1 - Introduction and Description V .35 Shunt Procedure If you are using an external DCE device on the W AN RS232/V .35 port, and the connection will be a V .35 connection, the internal 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. S[...]

14 Dual Ethernet ProxyServer User Guide Cabling Y our ProxyServer Cabling your ProxyServer involves making the proper Power , Command Port, and two Ethernet connections. An optional W AN connection is provided to connect to an external W AN device. Figure 2-4 shows the back panel connectors and the associated cable connections, and the table that f[...]

15 Chapter 2 - Installation T able 2-1. (cont’d.) Step Procedure 5. If a cable modem, DSL modem, or your Internet LAN is being used, no cable connection will be made to the RS232/V .35 connector on the back of the ProxyServer . If the RS232/V .35 connector on the ProxyServer is going to be connected to a WAN device (i.e., connecting your secure ([...]

16 Dual Ethernet ProxyServer User Guide[...]

Chapter 3 - Software Loading and Configuration[...]

18 Dual Ethernet ProxyServer User Guide Loading Y our Software The following loading procedure does not provide every screen or option in the process of installing the Firewall software. The assumption is that the installation is being performed by a technical person with a thorough knowledge of Windows and the software loading process. Additional [...]

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. Click Finish to continue. 7. The “ Do you want to download default setup[...]

20 Dual Ethernet ProxyServer User Guide IP Port Configuration This dialog allows for the configuration of IP parameters that are generally applicable to IP proxying on all ports. 8. The Secured LAN Port Parameters have to be changed to your private (secure) LAN parameters. Enter your Secured LAN Port IP Address in the IP Address field, followed by [...]

21 Chapter 3 - Software Loading and Configuration Default W AN Link Configuration The default W AN Link(s) Setup dialog box is only used if a device is connected to the RS-232/ V .35 connector on the back panel of the ProxyServer. This connection allows your private (secured) LAN to be connected to a local ISP for Internet service. If a cable modem[...]

22 Dual Ethernet ProxyServer User Guide 19. The Writing Setup dialog box is displayed as the setup configuration is written to the ProxyServer . 20. Check to ensure that the F AIL LED on the ProxyServer is Off after the download is complete and the ProxyServer is rebooted. 21. Win3.1 users - you are returned to your Program Manager where the Firewa[...]

Chapter 4 - Firewall Software[...]

24 Dual Ethernet ProxyServer User Guide Introduction This chapter describes the Firewall software used in the Dual Ethernet ProxyServer . It begins with the description of three typical applications for the ProxyServer . These configuration examples are followed by a description of the Firewall program group, and examples of how to add some of the [...]

25 Chapter 4 - Firewall Software During the loading of the Firewall software, the Secured LAN Port Parameters group (in the IP Setup dialog box) was configured to include an unregistered IP Address of 192.168.0.101 and default Net Mask of 255.255.255.0 for the private LAN (LAN 1). The Internet LAN Port Parameters group was configured with the DHCP [...]

26 Dual Ethernet ProxyServer User Guide Configuration 2 - Existing Dual-LAN with Router Another typical configuration ties the private LAN (LAN 1) to an existing Internet Services Network, which already provides Internet services. This configuration provides firewall and gateway security for the LAN users, and supports Internet access restrictions [...]

27 Chapter 4 - Firewall Software Configuration 3 - New Dual-LAN with T1 DSU The final typical configuration adds Internet services to existing LAN users. With this configuration, the private LAN (LAN 1) is secured by the firewall while the Internet Services Network is outside the firewall allowing Internet users to access the public LAN (LAN 2) res[...]

28 Dual Ethernet ProxyServer User Guide The Internet LAN Port Parameters group is either configured with the DHCP Client option active, enabling the ISP to dynamically provide the registered Internet IP addresses, or with the DHCP Client option disabled if a static IP addressing scheme is provided by the ISP . If the DHCP Client field is deactivate[...]

29 Chapter 4 - Firewall Software Firewall Program Group This section describes the advanced features of your Firewall software. The major configuration parameters are set when the software is loaded into your PC and the setup configuration is downloaded to the ProxyServer at the conclusion of the software installation. Our intent is not to cover ev[...]

30 Dual Ethernet ProxyServer User Guide Download Firmware Update This application allows you to update the firmware of the ProxyServer . This may be necessary in the case of repair or upgrade. T o download the firmware update, choose Download Firmware Update from the Firewall Program Group , and the Open dialog box is displayed (if the ProxyServer [...]

31 Chapter 4 - Firewall Software Firewall Configuration T o view or change your ProxyServer configuration in Windows 95, click on the Start | Programs | Firewall | Firewall Configuration . After loading, the Firewall Setup menu will appear . The Firewall Setup menu consists of 13 buttons which allow you to display and change the protocol stacks, de[...]

32 Dual Ethernet ProxyServer User Guide Changing IP Parameters The IP Setup dialog box establishes the IP addressing for your private LAN, Public LAN, and, if the Proxy Server is directly connected to the Internet, the W AN port. T o change the IP Setup parameters that were configured during the initial setup, click on the IP button in the Firewall[...]

33 Chapter 4 - Firewall Software The W AN Port Parameters group is used to configure the W AN port, if enabled. The W AN port parameters are established when the ProxyServer is directly connected to the Internet via the RS232/V .35 connector on the back of the unit. ISP Assigns Dynamic Address - Normally , the ISP assigns a dynamic address when the[...]

34 Dual Ethernet ProxyServer User Guide Changing W AN Port Parameters In order to change the W AN port parameters of a DCE device connected to the RS232/V .35 connector on the ProxyServer , click on the WA N button in the Firewall Setup menu. The WA N Port Setup dialog box is displayed. From this dialog, you can configure the parameters of the W AN[...]

35 Chapter 4 - Firewall Software Adding Proxy Applications Certain software on your LAN may require a TCP or UDP port usage that is not currently supported by the ProxyServer . If this is the case, you must refer to the software documentation to determine the proper port usage and number . Without this information, the Proxy will not allow packets [...]

36 Dual Ethernet ProxyServer User Guide Enabling the DHCP Server The DHCP Server feature of the ProxyServer manages all the IP address assignments on the private LAN. IP address management becomes completely transparent. T o enable the DHCP Server ability in the ProxyServer , click on the DHCP Server button in the Firewall Setup menu. The DHCP Serv[...]

37 Chapter 5 - Remote Configuration and Management Enabling PPP/SLIP If you wish to use Point to Point Protocol (PPP) or Serial Line IP Protocol (SLIP) on the W AN port, you can enable in the PPP/SLIP menu. In order to configure these options, you must first enable the W AN port. T o enable the W AN port, click on the WAN button in the Firewall Set[...]

38 Dual Ethernet ProxyServer User Guide Enabling SLIP If you wish to configure the port for use with SLIP , click on the Enable check box in the SLIP group. The following message appears: Click OK . This value was assigned in the initial software installation and was downloaded to the ProxyServer at the end of the installation. If you wish to verif[...]

39 Chapter 4 - Firewall Software Applications In addition to local configuration, the ProxyServer supports various applications which allow it to be configured remotely from anywhere on the connected Internet. T o manage these applications, click Others in the Proxy Setup menu. The Applications Setup dialog box appears. Enter a valid Server Passwor[...]

40 Dual Ethernet ProxyServer User Guide Filtering The IP Filtering Setup dialog provides tabs that let you configure the ProxyServer so that IP packets that are received by the server can be selectively filtered or forwarded based on their addresses or by the protocol ports to which they are destined. The three filtering methods are: • IP Protoco[...]

Chapter 5 - Remote Configuration and Management[...]

42 Dual Ethernet ProxyServer User Guide Introduction This chapter provides procedures for changing the configuration of a remote unit. Remote configuration allows a PC at one site (local site) to dial a remote ProxyServer and change the configuration of that remote unit. Remote configuration can be accomplished either directly through the LAN or re[...]

43 Chapter 5 - Remote Configuration and Management V erify that the Communication T ype is set for COM Port and the Select Port field is set for the COM port of your local PC. In the Dial String field, enter the A T command for dialing (A TDT) plus the phone number of the remote ProxyServer . If your Modem Initialization String, Initialization Resp[...]

44 Dual Ethernet ProxyServer User Guide LAN-Based Remote Configuration Procedure Windows Sockets Compliant TCP/IP Stack The configuration program requires a Windows Sockets compliant TCP/IP stack. TCP/IP protocol software must be installed and functional before the configuration program can be used. 1 Y ou must assign an Internet (IP) address for t[...]

45 Chapter 5 - Remote Configuration and Management 6 The Firewall Setup dialog box is displayed. This is the dialog box of the remote ProxyServer . Refer to the on-line help provided with your ProxyServer for the definition of each dialog box and field within a dialog box. 7 After you have changed the configuration of the remote ProxyServer , click[...]

46 Dual Ethernet ProxyServer User Guide Remote Management This section describes typical client applications that can be used to configure the ProxyServer remotely . It is important to note that although any subsequent changes to configuration can be made using these applications, the initial setup and configuration of the ProxyServer must be done [...]

47 Chapter 5 - Remote Configuration and Management Firewall Management Menu The Firewall Management Menu provides two basic options: Firewall Configuration and W AN Device Configuration. A further option enables you to close the T elnet session from this menu by pressing the Esc key . Firewall Configuration Selecting Option 1 displays the Firewall [...]

48 Dual Ethernet ProxyServer User Guide WEB Management The ProxyServer can be accessed, via a standard web-browser , from anywhere on the connected Internet. In order to provide this support, the WEB Server option has to be enabled in the Applications Setup dialog box (see Chapter 4 - Firewall Software, Applications ). Once enabled, users can acces[...]

Chapter 6 - W arranty , Service and T ech Support[...]

50 Dual Ethernet ProxyServer User Guide Introduction This chapter starts out with statements about your Dual Ethernet ProxyServer 2-year warranty . The next section, T ech Support, should be read carefully if you have questions or problems with your ProxyServer . It includes the technical support telephone numbers, space for recording your product [...]

51 Chapter 6 - W arranty , Service and T echnical Support T ech Support Multi-T ech has an excellent staff of technical support personnel available to help you get the most out of your Multi-T ech product. If you have any questions about the operation of this unit, call 1- 800-972-2439. Please fill out the ProxyServer information (below), and have [...]

52 Dual Ethernet ProxyServer User Guide Service If your tech support specialist decides that service is required, your ProxyServer may be sent (freight prepaid) to our factory . Return shipping charges will be paid by Multi-T ech Systems. Include the following with your ProxyServer: • a description of the problem. • return billing and return sh[...]

53 Chapter 6 - W arranty , Service and T echnical Support The Multi-T ech BBS For customers who do not have Internet access, Multi-T ech maintains a bulletin board system (BBS). Information available from the BBS includes new product information, product upgrade files, and problem-solving tips. The phone number for the Multi-T ech BBS is (800) 392-[...]

54 Dual Ethernet ProxyServer User Guide 5. Enter D . Y ou will see a list of the files you have marked. Enter E if you would like to edit the list; otherwise enter D again to start the download process. 6. Select a file transfer protocol by typing the indicated letter , such as Z for Zmodem (the recommended protocol). 7. If you select Zmodem, the f[...]

Appendixes[...]

56 Dual Ethernet ProxyServer User Guide Appendix A - TCP/IP (T ransmission Control Protocol/ Internet Protocol) Description TCP/IP is a protocol suite and related applications developed for the U.S. Department of Defense in the 1970s and 1980s specifically to permit dif ferent types of computers to communicate and exchange information with one anot[...]

57 Appendix A - TCP/IP Description UDP , described in RFC 768 ( http://info.internet.isi.edu:80/in-notes/rfc/files/rfc768.txt ) provides an end-to-end datagram (connectionless) service. Some applications, such as those that involve a simple query and response, are better suited to the datagram service of UDP because there is no time lost to virtual[...]

58 Dual Ethernet ProxyServer User Guide Internet Protocol (IP) IP is the Internet standard protocol that tracks Internetwork node addresses, routes outgoing messages and recognizes incoming messages, allowing a message to cross multiple networks on the way to its final destination. The IPv6 Control Protocol (IPV6CP) is responsible for configuring, [...]

59 Index Index A About CompuServe ............................................ 54 About the Internet ............................................... 54 About the Multi-T ech Fax-Back Service .............. 54 Adding Proxy Applications .................................. 35 Applications ........................................................ 39 Arch[...]

60 Dual Ethernet ProxyServer User Guide R Remote Configuration ......................................... 42 LAN-Based Procedure .................................... 44 Modem-Based Procedure ............................... 42 Remote Management ......................................... 46 T elnet ......................................................[...]