3Com 3CR856-95 manual 3Com Corporation Bayfront Plaza Santa Clara, California

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3Com Corporation

5400 Bayfront Plaza

Santa Clara, California 95052-8145

Copyright © 2002, 3Com Corporation. 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 Technologies.

3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.

3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose.

3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com, the 3Com logo and OfficeConnect are registered trademarks of 3Com Corporation.

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.

Netscape Navigator is a registered trademark of Netscape Communications.

JavaScript is a trademark of Sun Microsystems

All other company and product names may be trademarks of the respective companies with which they are associated.

ENVIRONMENTAL STATEMENT

It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to:

Establishing environmental performance standards that comply with national legislation and regulations.

Conserving energy, materials and natural resources in all operations.

Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental standards. Maximizing the recyclable and reusable content of all products.

Ensuring that all products can be recycled, reused and disposed of safely.

Ensuring that all products are labelled according to recognized environmental standards.

Improving our environmental record on a continual basis.

End of Life Statement

3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.

Regulated Materials Statement

3Com products do not contain any hazardous or ozone-depleting material.

Environmental Statement about the Documentation

The documentation for this product is printed on paper that comes from sustainable, managed forests; it is fully biodegradable and recyclable, and is completely chlorine-free. The varnish is environmentally-friendly, and the inks are vegetable-based with a low heavy-metal content.

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Contents Page 3Com Corporation Bayfront Plaza Santa Clara, California United States Government LegendContents IP Addressing TroubleshootingUsing Discovery ISP Information Safety InformationEnd User Software Licence Agreement Index Regulatory NoticesPage Conventions About this GuideNaming Convention Icon DescriptionProduct Registration Related DocumentationFeedback about this User Guide Introducing the Officeconnect CABLE/DSL Secure Gateway OfficeConnect Cable/DSL Secure GatewayExample Network Using a Cable/DSL Secure Gateway Cable/DSL Secure Gateway AdvantagesPackage Contents Minimum System and Component RequirementsAlert LED Orange Power LED GreenFront Panel Flashing slowly Two seconds on, two seconds offCable/DSL Status LED Power Adapter socketRear Panel Ethernet Cable/DSL portPage Introduction Installing the GatewayBefore you Install your Gateway Positioning the GatewayPPPoE StaticPowering Up the Gateway Connecting the Cable/DSL Secure GatewayPage Windows 2000, XP Setting UP Your ComputersObtaining an IP Address Automatically Macintosh OS 8.5 Disabling PPPoE and Pptp Client SoftwareWindows 95, 98, ME Disabling Web Proxy Internet PropertiesPage Running the Setup Wizard Accessing the WizardSetting the Password Welcome ScreenSetting the Time Zone To set the Gateway to World Time UTCAuto-Configuration Settings Internet SettingsStatic IP Mode Dynamic IP Address ModePPPoE Mode Connection, use the following procedurePptp Mode Pptp ScreenChoosing your LAN Settings Activating DhcpDhcp Server Setup Screen Viewing the SummaryPage Main Menu Gateway ConfigurationNavigating Through the Gateway Configuration Pages Option TabsPassword Screen Welcome ScreenLAN IP Settings LAN SettingsSetup Wizard Changing the LAN SettingsChanging the Dhcp Server Settings Dhcp Clients List Dhcp Clients ScreenInternet Settings Static IP Address DSL or CableConnection to ISP Connection to ISP ScreenConfiguring a Static IP Address Static Address Setup ScreenConfiguring a Dynamic IP Address Dynamic Address Setup ScreenConfiguring a PPPoE connection PPPoE Setup ScreenSetting up NAT Configuring a Pptp connectionSetting up One-to-Many NAT One-to-Many and One-to-One NATVirtual Servers Menu Configuring the FirewallSetting up One-to-One NAT Creating a Virtual Server Creating a Virtual DMZVirtual Servers Settings Screen PC PrivilegesTo use access control for all computers To assign different access rights for different computersSpecial Applications Special Applications ScreenAdding and Editing Special Applications Creating Custom Special ApplicationsCustom Special Applications Setup Screen Advanced Settings Screen AdvancedIPSec Configuration Configuring VPNsSetting the VPN Mode L2TP Configuration Address Pool for Pptp and L2TP clients field enterPptp Configuration Viewing VPN ConnectionsAdding and Editing VPN Connections IPSec Connections using Remote User Access IPSec Connections using Gateway to GatewayIPSec Connection Gateway to Gateway L2TP over IPSec Connections Connection Name field enter headsalesEditing IPSec Routes Pptp ConnectionsAccessing the System Tools RestartLoading and Saving the Gateway Configuration Time ZoneUpgrade Screen Upgrading the Firmware of your GatewayViewing Status and Logs Status ScreenLog Settings Screen Obtaining Support and Feedback for your GatewayFeedback Screen Basic Connection Checks TroubleshootingBrowsing to the Gateway Configuration Screens Connecting to the Internet Forgotten PasswordAlert LED Http//192.168.1.1Frequently Asked Questions Does the Gateway support virtual private networks VPNs?Running the Discovery Application Using DiscoveryWindows Installation 95/98/2000/Me/NT Discovery Finish Screen IP Addresses and Subnet Masks IP AddressingInternet Protocol Suite Type OneStatic Addressing How does a Device Obtain an IP Address and Subnet Mask?Dhcp Addressing Type TwoPrivate IP Addresses Auto-IP AddressingPage Technical Specifications StandardsEthernet Performance Cable SpecificationsSystem Requirements Operating SystemsWichtige Sicherheitshinweise Safety InformationImportant Safety Information Consignes importantes de sécurité Page Page END User Software Licence Agreement 3Com CorporationPage Information Regarding Popular ISPs Internet Characteristics Popular ISPs Connection TypesISP Information Page Glossary Ethernet Address DSL modemEthernet Fast EthernetL2TP over IPSec IP AddressIPSec MAC AddressNetwork Interface Card NIC SwitchNetwork ProtocolTraffic WizardPage Index NumbersIeee Ietf NAT Ping VPN Page Regulatory Notices FCC Statement100 Page DUA08569-5AAA02 Published November
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