3Com OfficeConnect 3C855 User Manual
Cable/dsl gateway
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Summary of Contents for 3Com OfficeConnect 3C855
- Page 1 OfficeConnect® Cable/DSL Gateway User Guide 3C855 http://www.3com.com/ Part No. DUA0085-5AAA02 Published January 2002...
- Page 2 3Com Corporation Copyright © 2001, 3Com Technologies. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com 5400 Bayfront Plaza Technologies.
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Page 3: Table Of Contents
ONTENTS BOUT UIDE Naming Convention Conventions Feedback about this User Guide Related Documentation Product Registration NTRODUCING THE FFICE OfficeConnect Cable/DSL Gateway Cable/DSL Gateway Advantages Package Contents Minimum System and Component Requirements Front Panel Rear Panel ARDWARE NSTALLATION Introduction Positioning the Gateway Safety Information Using the Rubber Feet Before you Install your Gateway... - Page 4 WAN Settings PPPoE Mode Dynamic IP Address Mode Static IP Mode LAN Settings DHCP Summary ATEWAY ONFIGURATION Navigating Through the Gateway Configuration Pages Main Menu Option Tabs Getting Help Welcome Screen Notice Board Password Changing the Administration Password 32 Enabling Remote Administration 32 Setup Wizard LAN Settings Unit Configuration...
- Page 5 Support ROUBLESHOOTING Basic Connection Checks Browsing to the Gateway Configuration Screens Connecting to the Internet Forgotten Password Alert LED Recovering from Corrupted Software Frequently Asked Questions SING ISCOVERY Running the Discovery Application Windows Installation (95/98/2000/Me/NT) IP A DDRESSING The Internet Protocol Suite Managing the Cable/DSL Gateway over the Network IP Addresses and Subnet Masks Type One...
- Page 6 OFTWARE ICENCE GREEMENT 3Com Corporation END USER SOFTWARE LICENSE AGREEMENT ISP I NFORMATION Information Regarding Popular ISPs LOSSARY NDEX...
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Page 7: About This Guide
Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) on the 3Com World Wide Web site: http://www.3com.com Naming Convention Throughout this guide, the OfficeConnect Cable/DSL Gateway is referred to as the “Gateway.”... -
Page 8: Feedback About This User Guide
Feedback about this Your suggestions are very important to us. They will help make our documentation User Guide more useful to you. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.com Please include the following information when commenting: Example: Do not use this e-mail address for technical support questions. -
Page 9: Ntroducing The
OfficeConnect Hub or Switch, expanding the number of computers you can have in your network. NTRODUCING THE /DSL G ABLE ATEWAY ® product range from 3Com has changed all this, bringing networks Cable or DSL modem FFICE ONNECT ® . In the modern business... -
Page 10: Cable/Dsl Gateway Advantages
1: I HAPTER NTRODUCING THE Figure 2 Example Network Using a Cable/DSL Gateway Cable/DSL Gateway Advantages Package Contents The OfficeConnect Cable/DSL Gateway kit includes the following items: If any of these items are missing or damaged, please contact your retailer. Minimum System and Your OfficeConnect Cable/DSL Gateway requires that the computer(s) and Component... -
Page 11: Front Panel
Front Panel The front panel of the Gateway contains a series of indicator lights (LEDs) that help describe the state of various networking and connection operations. Figure 3 Cable/DSL Gateway - Front Panel 1 Alert LED 2 Power LED 3 Four LAN Status LEDs An Ethernet 10Mbps or 10/100 Mbps NIC for each computer to be connected to the four-port switch on your Gateway. -
Page 12: Rear Panel
1: I HAPTER NTRODUCING THE 4 Cable/DSL Status LED Rear Panel The rear panel (Figure 4) of the Gateway contains four LAN ports, one Ethernet Cable/DSL port, and a power adapter socket. Figure 4 Cable/DSL Gateway - Rear Panel 5 Power Adapter socket 6 Ethernet Cable/DSL port 7 Four 10/100 LAN ports /DSL G... -
Page 13: Hardware Installation
Introduction This chapter will guide you through a basic installation of the OfficeConnect Cable/DSL Gateway, including: Positioning the You should place the Cable/DSL Gateway in a location that: Gateway Safety Information WARNING: Please read the “Important Safety Information” section in Appendix D before you start. -
Page 14: Before You Install Your Gateway
2: H HAPTER ARDWARE NSTALLATION Before you Install your Before you install and configure your Gateway, you need the following additional Gateway information. If you do not have this information, contact your Internet Service Provider. Space is provided below for you to record this information. If your ISP allocates IP information dynamically over PPPoE, you need a User Name and Password: Only enter a PPPoE Service Name if your ISP requires you to do this. - Page 15 Cable/DSL Figure 5 Connecting the Cable or DSL modem 1 Insert one end of the supplied Ethernet (RJ-45 Category 5) cable into the Cable/DSL port on the rear panel of the Cable/DSL Gateway. 2 Insert the other end of the cable into the RJ-45 port on your cable or DSL modem. Check that the Cable/DSL status LED lights on the Gateway.
- Page 16 2: H HAPTER ARDWARE NSTALLATION...
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Page 17: Setting U P Your Computers
The OfficeConnect Cable/DSL Gateway has the ability to dynamically allocate network addresses to the computers on your network, using DHCP. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the instructions in this chapter. -
Page 18: Windows 95/98/Me
Windows 95/98/ME 1 From the Windows Start Menu, select Settings> Control Panel. 2 Double click on Network. Select the TCP/IP item for your network card and click on Properties. 3 In the TCP/IP dialog, select the IP Address tab, and ensure that Obtain IP address automatically is selected. -
Page 19: Web Proxy Settings
PPPoE Client Software Figure 8 You may wish to remove the PPPoE client software from your computer to free resources, as it is not required for use with the Gateway. Web Proxy Settings Ensure that you do not have a web proxy enabled on your computer. Go to the Control Panel and click on Internet Options. - Page 20 3: S HAPTER ETTING OMPUTERS...
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Page 21: Running The Setup Wizard
Accessing the Wizard The Cable/DSL Gateway setup program is Web-based, which means that it is accessed through your Web browser (Netscape Navigator or Internet Explorer). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Gateway. Refer to chapter 2 for details on how to do this. - Page 22 4: R HAPTER UNNING THE ETUP IZARD Figure 10 OfficeConnect Cable/DSL Gateway Log in Screen 4 If the password is correct, the OfficeConnect Cable/DSL Gateway Welcome screen will appear (Figure 11). If your Gateway has not been configured before, the Wizard will launch automatically (refer to Figure 12).
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Page 23: Password
Old Password, then a new password in both the New Password and Confirm Password. 3Com recommends entering a new password when setting up the Gateway for the first time. The Gateway is shipped from the factory with a default password, admin. -
Page 24: Timezone
4: R HAPTER UNNING THE ETUP IZARD Timezone Figure 14 Time Zone Screen Select your time zone from the pull-down menu, check the daylight savings option if required, and then click Next. The Daylight Savings option advances the system clock by one hour. It does not cause the system clock to be updated for daylight savings time automatically. -
Page 25: Pppoe Mode
PPPoE Mode Figure 16 PPPoE Screen To setup the gateway for use with a PPP over Ethernet (PPPoE) connection, use the following procedure: 1 Select the PPPoE is required radio button (See Figure 15) and then click Next. 2 Enter your PPP over Ethernet user name in the PPPoE User Name text box. 3 Enter your PPP over Ethernet password in the PPPoE Password text box. -
Page 26: Static Ip Mode
4: R HAPTER UNNING THE ETUP Figure 18 Clone MAC Address Screen 3 If your ISP requires an assigned MAC address, select the appropriate radio button (Yes) and manually enter the values for a MAC address if required. (Figure 18) If the computer you are using now is the one that was previously connected directly to the cable or DSL modem, choose Clone. -
Page 27: Lan Settings
Accessing the Wizard LAN Settings Figure 20 LAN IP Address Screen This screen displays a suggested LAN IP address and subnet mask of the Gateway. It also allows you to change the IP address and subnet mask. DHCP The Gateway contains a Dynamic Host Configuration (DHCP) server that can automatically configure the TCP/IP settings of every computer on your network. -
Page 28: Summary
When you complete the Setup Wizard, a configuration summary will display. Verify the configuration information of the Gateway and then click Finish to save your settings. 3Com recommends that you print this page for your records. If you have made changes to the LAN Settings options, you may need to reconfigure the computer you are using in order to make contact with the Gateway again. -
Page 29: Gateway Configuration
Navigating Through This chapter describes all the screens available through the Gateway configuration the Gateway pages, and is provided as a reference. To get to the configuration pages, browse Configuration Pages to the Gateway by entering the URL in the location bar of your browser. The default URL is http://192.168.1.1, but if you changed the Gateway LAN IP address during initial configuration, use the new IP address instead. -
Page 30: Welcome Screen
5: G HAPTER ATEWAY ONFIGURATION Welcome Screen Figure 23 OfficeConnect Cable/DSL Gateway Welcome Screen The Welcome section allows you to view the Notice board and to change your Password. You can also gain access to the Configuration Wizard. (See "Accessing the Wizard"... -
Page 31: Notice Board
Navigating Through the Gateway Configuration Pages Notice Board Figure 24 Notice Board Screen The Notice Board is used to display configuration warning messages. For example, you would be warned if you had disabled the Firewall. -
Page 32: Password
5: G HAPTER ATEWAY ONFIGURATION Password Figure 25 Password Screen Changing the Administration Password You can change the password to prevent unauthorized access to the Administration System. To do this: 1 Enter the current password in the Old Password field 2 Enter the new password in the New Password field 3 Enter the new password again in the Confirm Password field 4 Click Apply to save the new password... -
Page 33: Setup Wizard
Navigating Through the Gateway Configuration Pages Setup Wizard Figure 26 Wizard Screen Click the WIZARD... button to launch the configuration wizard. Refer to Chapter 4 for information on how to run the wizard. -
Page 34: Lan Settings
5: G HAPTER ATEWAY ONFIGURATION LAN Settings Unit Configuration Figure 27 Unit Configuration Screen The LAN Settings screen is used to specify the LAN IP address of your Gateway, and to configure the DHCP server. 1 Select Unit Configuration tab and then specify the Gateway IP Address and Subnet Mask in the LAN Settings field. - Page 35 Navigating Through the Gateway Configuration Pages each device that is connected to the LAN, the IP address, Host Name and MAC address of that device is displayed. As you connect more devices to the LAN, the client list will grow to a maximum number of clients, which is determined by the IP address range.
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Page 36: Internet Settings
5: G HAPTER ATEWAY ONFIGURATION Internet Settings Connection to ISP Figure 29 Connection to ISP Screen Select Internet Settings from the main menu. Before beginning this section, ensure you have the required information from your ISP. (See "Before you Install your Gateway"... -
Page 37: Ppp Over Ethernet Connection
Navigating Through the Gateway Configuration Pages PPP over Ethernet connection Figure 30 PPPoE Setup Screen Some ISPs require the use of PPPoE in order to establish connections with their networks. If you are unsure, you should ask your ISP whether you need to use PPPoE. -
Page 38: Dynamic Ip Address
5: G HAPTER ATEWAY ONFIGURATION Dynamic IP Address Figure 31 Connection Parameters Screen If this mode is selected, your IP Address, Subnet Mask, and DNS Address will be obtained automatically from your ISP. They are not displayed on this screen, but may be viewed on the Status screen (click on Status and Logs on the left hand menu bar). -
Page 39: Advanced - Clone Mac
Navigating Through the Gateway Configuration Pages To setup the Gateway for use with a Static IP address connection: 1 Select Static IP Address (to be specified manually) in the IP Allocation Mode field. (Figure 32) 2 Enter your IP Address in the IP Address text box. This information, along with the rest of the information in this screen, should be provided to you by your ISP. -
Page 40: Firewall
5: G HAPTER ATEWAY ONFIGURATION Firewall On the main frame of the Firewall setup screen is a menu with four tabs: Virtual Servers, Special Applications, PCs Privileges, and Security. Virtual Servers Selecting the Firewall option on the main menu displays the Virtual Servers setup screen. - Page 41 Navigating Through the Gateway Configuration Pages To configure a virtual server: 1 Click on the New button on the right side of the screen to open the Virtual Server Settings dialogue box. (Figure 35) 2 Enter the last digit(s) of the IP address of the computer in the Server IP Address text box.
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Page 42: Special Applications
5: G HAPTER ATEWAY ONFIGURATION Special Applications Figure 37 Special Applications Screen Select Special Applications tab to display Authorized Application setup screen. (Figure 37) Some software applications require special or multiple connections to the Internet and these would normally be blocked by the Firewall. For example Internet Telephony or Video conferences require multiple connections. - Page 43 Navigating Through the Gateway Configuration Pages Figure 39 Other Applications Setup Screen 3 Click Add to save your settings. Only one computer on your network can be configured for special access at any one time.
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Page 44: Pcs Privileges
5: G HAPTER ATEWAY ONFIGURATION PCs Privileges Figure 40 PCs Privileges Screen Select PCs Privileges to display the PCs Privileges setup screen. (Figure 40) Access from the local network to the Internet can be controlled on a PC-by-PC basis. In the default configuration the Gateway will allow all connected PCs unlimited access to the Internet. - Page 45 Navigating Through the Gateway Configuration Pages Activating Allow will give the particular users access to the service(s) you indicate in step 5 (see below). Activating Block denies access to the services chosen in step 5 Select the service(s) to allow or block by clicking in the appropriate check box(es), and then specify the port number for corresponding services.
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Page 46: Security
This feature is enabled by clicking on the check box so that a tick can be seen and then pressing the Apply button. 3Com recommends that you leave this disabled. Disable Firewall The Gateway contains a firewall that detects attack patterns used by hackers on the Internet and once detected will block their access to your network. -
Page 47: System Tools
Navigating Through the Gateway Configuration Pages System Tools After you have completed all basic setup procedures in the Welcome | Wizard section, you can go in later and change individual settings at any time by using the System Tools. The main frame of the System Tools screen includes four administration items: Restart, Time Zone, Configuration, and Upgrade. -
Page 48: Time Zone
5: G HAPTER ATEWAY ONFIGURATION Time Zone Figure 45 Time Zone Screen Choose the time zone that is closest to your actual location. The time zone setting is used by the system clock when displaying the correct time in the log files. If you use Daylight saving tick the Enable Daylight savings box, and then click Apply. -
Page 49: Configuration
Navigating Through the Gateway Configuration Pages Configuration Figure 46 Configuration Screen Select Configuration tab to display the Configuration screen.(Figure 46) Backup Configuration Click the BACKUP button to save the current configurations of the OfficeConnect Cable/DSL Gateway. You will be prompted to download and save a file to disk. -
Page 50: Upgrade
3Com may make available. To install new software, you first need to download the software from the 3Com support web site to a folder on your computer. Once you have done this, use the Browse button to tell your web browser where this file is on your computer, and then click on Apply. -
Page 51: Status And Logs
Navigating Through the Gateway Configuration Pages Status and Logs Figure 48 Status and Logs Screen... - Page 52 5: G HAPTER ATEWAY ONFIGURATION Selecting Status and Logs from the Main menu displays the Status and Logs screens (Figure 48) in your Web browser window. The Status and Logs screen display a tabular representation of your network and Internet connection. Status - to display the current unit status, including a summary of the configuration Logs - to view both the normal events, and security threats logged by the Gateway...
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Page 53: Support
Navigating Through the Gateway Configuration Pages Support Figure 49 Support Screen Selecting Support option on the main menu generates the support links screen, which contains a list of Internet links that provide information and support concerning the Gateway. (Figure 49) - Page 54 5: G HAPTER ATEWAY ONFIGURATION...
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Page 55: Basic Connection Checks
Basic Connection Checks Browsing to the If you have connected your Gateway and computers together but cannot browse Gateway to the Gateway configuration screens, check the following: Configuration Screens ROUBLESHOOTING Check that the Gateway is connected to your computers and to the cable/DSL modem, and that all the equipment is powered on. -
Page 56: Connecting To The Internet
6: T HAPTER ROUBLESHOOTING Connecting to the If you can browse to the Gateway configuration screens but cannot access sites on Internet the Internet, check the following: Forgotten Password If you can browse to the Gateway configuration screen but cannot log on because you do not know or have forgotten the password, follow the steps below to reset the Gateway to it’s factory default configuration. -
Page 57: Alert Led
Alert LED The Alert LED will flash when the Gateway unit is first powered up while the system software checks the hardware for proper operation. Once the Gateway has started normal operation, the Alert LED will go out. Recovering from If the Alert LED remains permanently on following power-up, it is possible that the Corrupted Software system software has become corrupted. -
Page 58: Frequently Asked Questions
VPN hosts on your LAN that clients elsewhere on the Internet can connect to, but this is not a recommended configuration. Upgrades to the Cable/DSL Gateway software are posted on the 3Com support web site, accessible by visiting www.3com.com. Upgrades are also available via FTP from ftp.3com.com. -
Page 59: Sing Iscovery
Running the Discovery 3Com provides a user friendly Discovery application for detecting the Application OfficeConnect Cable/DSL Gateway on the network. Windows Installation (95/98/2000/Me/NT) 1 Insert the Gateway CD-ROM in the CD-ROM drive on your computer. A menu will appear; select Gateway Discovery. - Page 60 A: U PPENDIX SING ISCOVERY 3 Figure 52 shows an example Discovered Devices screen. Highlight the Cable/DSL Gateway by clicking on it, and press Next. Figure 52 Discovery Finish Screen 4 Click on Finish to launch a web browser and display the login page for the Gateway.
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Page 61: Ip Addressing
IP A The Internet Protocol The Internet protocol suite consists of a well-defined set of communications Suite protocols and several standard application protocols. Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the most widely known and is a combination of two of the protocols (IP and TCP) working together. TCP/IP is an internationally adopted and supported networking standard that provides connectivity between equipment from many vendors over a wide variety of networking technologies. -
Page 62: Type Two
B: IP A PPENDIX DDRESSING This type of IP Address operates on a subnet mask of ‘255.255.255.0’. See Table 1 for an example about how a network with three PCs and a Cable/DSL Gateway might be configured. Table 1 IP Addressing and Subnet Masking Device PC 1 PC 2... -
Page 63: Static Addressing
How does a Device Obtain an IP Address and Subnet Mask? Static Addressing You must enter an IP Address and the subnet mask manually on every device. Using a static IP and subnet mask means the address is permanently fixed. Auto-IP Addressing Network devices use automatic IP addressing if they are configured to acquire an address using DHCP but are unable to contact a DHCP server. - Page 64 B: IP A PPENDIX DDRESSING...
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Page 65: C Technical Specifications
This section lists the technical specifications for the OfficeConnect Cable/DSL Gateway. Interfaces Cable or DSL modem connection - one 10Mbps Ethernet port (10BASE-T). LAN connection - four 10Mbps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) with auto-MDIX Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 13V DC OfficeConnect Power Adapter Humidity... -
Page 66: System Requirements
C: T PPENDIX ECHNICAL PECIFICATIONS System Requirements Operating Systems The Cable/DSL Gateway will support the following Operating Systems: Ethernet Performance The Cable/DSL Gateway complies to the IEEE 802.3i, u and x specifications. Cable Specifications The Cable/DSL Gateway supports the following cable types and maximum lengths: Windows 95/98 Windows NT 4.0 Windows ME... -
Page 67: Afety And
Important Safety Information Wichtige Sicherheitshinweise AFETY AND EGULATORY TATEMENTS WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit: WARNING: Exceptional care must be taken during installation and removal of the unit. -
Page 68: Consignes Importantes De Sécurité
D: S PPENDIX AFETY AND EGULATORY Consignes importantes de sécurité TATEMENTS WARNHINWEIS: Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die Stromversorgung des Geräts kann nur durch Herausziehen des Gerätenetzkabels aus der Netzsteckdose unterbrochen werden. WARNHINWEIS: Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen (Sicherheitskleinstspannung) gemäß... -
Page 69: End User Software License Agreement
Subject to the restrictions set forth herein, the Software is licensed to be used on any workstation or any network server owned by or leased to you, for your internal use, provided that the Software is used only in connection with this 3Com product. You may reproduce and provide one (1) copy of the Software and Documentation for each such workstation or network server on which the Software is used as permitted hereunder. - Page 70 E: E PPENDIX OFTWARE ICENCE GREEMENT...
- Page 71 ISP I Information Regarding Popular ISPs NFORMATION WAN Types Characteristics Dynamic IP Cable modem ISP, non-hostname based. Need to clone the MAC (Clone MAC) address in the Advanced tab of the Internet Settings page. Dynamic IP Cable ISP, Requires Hostname to authenticate ie.
- Page 72 F: ISP I PPENDIX NFORMATION...
- Page 73 DNS Server Address DNS stands for Domain Name System, which allows Internet host computers to have a domain name (such as 3com.com) and one or more IP addresses (such as 192.34.45.8). A DNS server keeps a database of host computers and their...
- Page 74 LOSSARY requested (as in typing “3com.com” into your Internet browser), the user is sent to the proper IP address. The DNS server address used by the computers on your home network is the location of the DNS server your ISP has assigned.
- Page 75 (full-stops), and is made up of a network section, an optional subnet section and a host section. Internet Service Provider. An ISP is a business that provides connectivity to the Internet for individuals and other businesses or organizations. Local Area Network. A network of end stations (such as PCs, printers, servers) and network devices (hubs and switches) that cover a relatively small geographic area (usually not larger than a floor or building).
- Page 76 LOSSARY Subnet mask A subnet mask, which may be a part of the TCP/IP information provided by your ISP, is a set of four numbers configured like an IP address. It is used to create IP address numbers used only within a particular network (as opposed to valid IP address numbers recognized by the Internet, which must assigned by InterNIC).
- Page 77 NDEX access rights 45 addresses IP 61 Administration Password 23, 32 Automatic Addressing 62 cable specifications 66 Clone MAC 39 conventions notice icons, About This Guide 7 text, About This Guide 7 DHCP 25, 27, 34, 62 DHCP Server 18 Discovery application 59 DMZ 40 DNS 17, 26, 36, 38...
- Page 78 NDEX...
- Page 80 3Com Corporation, Corporate Headquarters, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145, USA. To learn more about 3Com products and services, visit our World Wide Web site at www.3com.com All specifications are subject to change without notice. Copyright © 2002 3Com Corporation. All rights reserved.