SMC Networks Barricade SMC7401BRA User manual

ADSL Barricade™
2-Port ADSL Router with Built-in
Annex A ADSL Modem
User Guide
February 2004

i
TABLE OF CONTENTS
Introduction 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Using this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Notational conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Typographical conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Special messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Getting to Know the ADSL Barricade . . . . . . . . . . . . . . 5
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Step 1. Connect the ADSL cable . . . . . . . . . . . . . . . . . . . . . . . . . .8
Step 2. Connect the Ethernet cable . . . . . . . . . . . . . . . . . . . . . . .9
Step 3. Attach the power connector . . . . . . . . . . . . . . . . . . . . . . .9
Step 4. Power up your systems . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Installing USB Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Configuring Your Computers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Windows® XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Windows 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Windows Me . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Windows 95, 98 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Windows NT 4.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Assigning static Internet Information to your PCs . . . . . . . . . . . .22
Configuring the ADSL Barricade . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Logging into the ADSL Barricade -
Quick Configuration Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Default Router Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Table of Contents
ii
Getting Started with the Configuration Manager . . . .29
Accessing the Configuration Manager . . . . . . . . . . . . . . . . . . . . . . . . 29
Functional Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Commonly used buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
The Home Page and System View Table . . . . . . . . . . . . . . . . . . . . . 33
Modifying Basic System Information . . . . . . . . . . . . . . . . . . . . . . . . . 36
Committing Changes and Rebooting . . . . . . . . . . . . . . . . . . . . . . . . . 39
Committing your changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Rebooting the device using Configuration Manager . . . . . . . . 40
Configuring the LAN Ports . . . . . . . . . . . . . . . . . . . . . .41
Connecting via Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Configuring the LAN Port IP Address . . . . . . . . . . . . . . . . . . . . . . . . 41
Viewing System IP Addresses
and IP Performance Statistics . . . . . . . . . . . . . . . . . . .48
Viewing the ADSL Barricade's IP Addresses . . . . . . . . . . . . . . . . . . 48
Viewing IP Performance Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Configuring Dynamic Host Configuration Protocol . .53
Overview of DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
What is DHCP? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Why use DHCP? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
ADSL Barricade DHCP modes . . . . . . . . . . . . . . . . . . . . . . . . 54
Configuring DHCP Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Guidelines for creating DHCP server address pools . . . . . . . . 55
Adding DHCP Server Address Pools . . . . . . . . . . . . . . . . . . . . 57
Viewing, modifying, and deleting address pools . . . . . . . . . . . 60
Excluding IP addresses from a pool . . . . . . . . . . . . . . . . . . . . 61
Viewing current DHCP address assignments . . . . . . . . . . . . . 61
Configuring DHCP Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Setting the DHCP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table of Contents
iii
Configuring Network Address Translation . . . . . . . . . 66
Overview of NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Viewing NAT Global Settings and Statistics . . . . . . . . . . . . . . . . . . . .69
Viewing NAT Rules and Rule Statistics . . . . . . . . . . . . . . . . . . . . . . .72
Viewing Current NAT Translations . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Adding NAT Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
The NAPT rule: Translating between private
and public IP addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
The RDR rule: Allowing external access
to a LAN computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
The Basic rule: Performing 1:1 translations . . . . . . . . . . . . . . . . .83
The Filter rule: Configuring a BASIC rule
with additional criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
The Bimap rule: Performing two-way translations . . . . . . . . . . . .87
The Pass rule: Allowing specific addresses to
pass through untranslated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
Configuring DNS Server Addresses . . . . . . . . . . . . . . 91
About DNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Assigning DNS Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Configuring DNS Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Configuring IP Routes . . . . . . . . . . . . . . . . . . . . . . . . . 95
Overview of IP Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
IP routing versus telephone switching . . . . . . . . . . . . . . . . . . . . .95
Hops and gateways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Using IP routes to define default gateways . . . . . . . . . . . . . . . . .98
Do I need to define IP routes? . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Viewing the IP Routing Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Adding IP Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Configuring the Routing Information Protocol . . . . 104
RIP Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
When should you configure RIP? . . . . . . . . . . . . . . . . . . . . . . .105
Configuring the ADSL Barricade's Interfaces with RIP . . . . . . . . . .105
Viewing RIP Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Table of Contents
iv
Configuring the ATM Virtual Circuit . . . . . . . . . . . . . .110
Viewing Your ATM VC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Adding ATM VCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Modifying ATM VCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Configuring PPP Interfaces . . . . . . . . . . . . . . . . . . . .118
Viewing Your Current PPP Configuration . . . . . . . . . . . . . . . . . . . . 119
Viewing PPP Interface Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Adding a PPP Interface Definition . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Modifying and Deleting PPP Interfaces . . . . . . . . . . . . . . . . . . . . . . 126
Configuring EOA Interfaces . . . . . . . . . . . . . . . . . . . .127
Overview of EOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Viewing Your EOA Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Adding EOA Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Configuring IPoA Interfaces . . . . . . . . . . . . . . . . . . . .133
Viewing Your IPoA Interface Setup . . . . . . . . . . . . . . . . . . . . . . . . . 133
Adding IPoA Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Configuring Bridging . . . . . . . . . . . . . . . . . . . . . . . . . .137
Overview of Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
When to Use the Bridging Feature . . . . . . . . . . . . . . . . . . . . . . . . . 139
Defining Bridge Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Deleting a Bridge Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Configuring Firewall Settings . . . . . . . . . . . . . . . . . . .143
Configuring Global Firewall Settings . . . . . . . . . . . . . . . . . . . . . . . . 143
Managing the Black List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Table of Contents
v
Configuring IP Filters and Blocked Protocols . . . . . 147
Configuring IP Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147
Viewing Your IP Filter Configuration . . . . . . . . . . . . . . . . . . . . .148
Configuring IP Filter Global Settings . . . . . . . . . . . . . . . . . . . . .149
Creating IP Filter Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151
IP filter rule examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157
Viewing IP Filter Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159
Managing Current IP Filter Sessions . . . . . . . . . . . . . . . . . . . . .160
Blocked Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162
Viewing DSL Line Information . . . . . . . . . . . . . . . . . . 165
Administrative Tasks . . . . . . . . . . . . . . . . . . . . . . . . . 169
Configuring User Names and Passwords . . . . . . . . . . . . . . . . . . . .169
Creating and Deleting Logins . . . . . . . . . . . . . . . . . . . . . . . . . .170
Changing Login Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
Viewing System Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Viewing the Alarm Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Upgrading the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174
Using Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
Modifying Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Overview of IP port numbers . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Modifying the ADSL Barricade’s port numbers . . . . . . . . . . . . .179
Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
IP Addresses, Network Masks and Subnets . . . . . . . . . . . . . . . . . .181
IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181
Structure of an IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181
Network classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183
Subnet masks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184
Appendix B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Binary Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187
Bits and bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188

Table of Contents
vi
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .189
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . .195
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199
Compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Legal Information and Contacts . . . . . . . . . . . . . . . . . .vii

1
INTRODUCTION
Congratulations on becoming the owner of the ADSL Barricade,
a 2-port ADSL Router with built-in Annex A ADSL Modem. Your
LAN (Local Area Network) will now be able to access the Internet
using your high-speed ADSL connection. This User Guide will show
you how to set up the ADSL Barricade, and how to customize its
configuration to get the most out of your
new product.
Features
•External ADSL modem for high-speed Internet access.
•10/100Base-T Ethernet router to provide Internet connectivity
to all computers on your LAN.
•Optional USB port for connecting a USB-enabled PC.
•Network address translation (NAT), Firewall, and IP filtering
functions to provide security for your LAN.
•
Network configuration through DHCP Server and DHCP Relay.
•Services including IP route and DNS configuration, RIP,
and IP and DSL performance monitoring.
•Configuration program you access via an HTML browser.

Introduction
2
System Requirements
In order to use the ADSL Barricade, you must have the following:
•ADSL service up and running on your telephone line,
with at least one public Internet address for your LAN.
•One or more computers each containing an Ethernet
10/100 Base-T network interface card (NIC) and/or a single
computer with a USB port.
•An Ethernet hub/switch, if you are connecting the device
to more than one computer on an Ethernet network.
•For system configuration using the supplied web-based
program: a web browser such as Internet Explorer V5.0
or later, or Netscape V6.1 or later.
Using this Document
Notational conventions
•Acronyms are defined the first time they appear in the text
and in the Terminology.
•For brevity, the ADSL Barricade is referred to as the device.
•The terms LAN and network are used interchangeably to refer
to a group of Ethernet-connected computers at one site.