SMC Networks Barricade SMC7204BRA User manual

ADSL BarricadeTM
4-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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
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
Configuring Your Computers . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Windows® XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Windows 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Windows Me . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Windows 95, 98 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Windows NT 4.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Assigning static Internet Information to your PCs . . . . . .16
Configuring the ADSL Barricade . . . . . . . . . . . . . . . . . . . . . . .17
Logging into the ADSL Barricade –
Quick Configuration Page . . . . . . . . . . . . . . . . . . . . . . . .17
Default Router Settings . . . . . . . . . . . . . . . . . . . . . . . . . .20

Table of Contents
ii
Getting Started with the Configuration Manager 23
Accessing the Configuration Manager . . . . . . . . . . . . . . . . . . . 23
Functional Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Commonly used buttons . . . . . . . . . . . . . . . . . . . . . . . . 25
The Home Page and System View Table . . . . . . . . . . . . . . . . 26
Modifying Basic System Information . . . . . . . . . . . . . . . . . . . . 28
Committing Changes and Rebooting . . . . . . . . . . . . . . . . . . . . 30
Committing your changes . . . . . . . . . . . . . . . . . . . . . . . 30
Rebooting the device using Configuration Manager . . . 31
Configuring the LAN Ports . . . . . . . . . . . . . . . . . .33
Connecting via Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Configuring the LAN Port IP Address . . . . . . . . . . . . . . . . . . . 33
Viewing System IP Addresses
and IP Performance Statistics . . . . . . . . . . . . . . .39
Viewing the ADSL Barricade's IP Addresses . . . . . . . . . . . . . . 39
Viewing IP Performance Statistics . . . . . . . . . . . . . . . . . . . . . . 41
Configuring Dynamic Host Configuration
Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Overview of DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
What is DHCP? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Why use DHCP? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
ADSL Barricade DHCP modes . . . . . . . . . . . . . . . . . . . 44
Configuring DHCP Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Guidelines for creating DHCP server address pools . . . 45
Adding DHCP Server Address Pools . . . . . . . . . . . . . . . 47
Viewing, modifying, and deleting address pools . . . . . . 50
Excluding IP addresses from a pool . . . . . . . . . . . . . . . . 51
Viewing current DHCP address assignments . . . . . . . . 51
Configuring DHCP Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Setting the DHCP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Configuring Network Address Translation . . . . .57
Overview of NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table of Contents
iii
Viewing NAT Global Settings
and Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Viewing NAT Rules and Rule Statistics . . . . . . . . . . . . . . . . . .62
Viewing Current NAT Translations . . . . . . . . . . . . . . . . . . . . . .63
Adding NAT Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
The NAPT rule: Translating between private
and public IP addresses . . . . . . . . . . . . . . . . . . . . . . . . .66
The RDR rule: Allowing external access
to a LAN computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
The Basic rule: Performing 1:1 translations . . . . . . . . . .72
The Filter rule: Configuring a BASIC rule
with additional criteria . . . . . . . . . . . . . . . . . . . . . . . . . . .74
The Bimap rule: Performing two-way translations . . . . .76
The Pass rule: Allowing specific addresses
to pass through untranslated . . . . . . . . . . . . . . . . . . . . .78
Configuring DNS Server Addresses . . . . . . . . . . 81
About DNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Assigning DNS Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Configuring DNS Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Configuring IP Routes . . . . . . . . . . . . . . . . . . . . . 85
Overview of IP Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
IP routing versus telephone switching . . . . . . . . . . . . . .85
Hops and gateways . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Using IP routes to define default gateways . . . . . . . . . .87
Do I need to define IP routes? . . . . . . . . . . . . . . . . . . . .87
Viewing the IP Routing Table . . . . . . . . . . . . . . . . . . . . . . . . . .88
Adding IP Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Configuring the Routing Information Protocol . 93
RIP Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
When should you configure RIP? . . . . . . . . . . . . . . . . . .94
Configuring the ADSL Barricade's Interfaces with RIP . . . . . . .94
Viewing RIP Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Configuring the ATM Virtual Circuit . . . . . . . . . . 99

Table of Contents
iv
Viewing Your ATM VC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Adding ATM VCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Modifying ATM VCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Configuring PPP Interfaces . . . . . . . . . . . . . . . .105
Viewing Your Current PPP Configuration . . . . . . . . . . . . . . . 106
Viewing PPP Interface Details . . . . . . . . . . . . . . . . . . . . . . . . 109
Adding a PPP Interface Definition . . . . . . . . . . . . . . . . . . . . . 112
Modifying and Deleting PPP Interfaces . . . . . . . . . . . . . . . . . 113
Configuring EOA Interfaces . . . . . . . . . . . . . . . .115
Overview of EOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Viewing Your EOA Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Adding EOA Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Configuring IPoA Interfaces . . . . . . . . . . . . . . . .121
Viewing Your IPoA Interface Setup . . . . . . . . . . . . . . . . . . . . 121
Adding IPoA Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Configuring Bridging . . . . . . . . . . . . . . . . . . . . .125
Overview of Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
When to Use the Bridging Feature . . . . . . . . . . . . . . . . . . . . 127
Defining Bridge Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Deleting a Bridge Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Configuring Firewall Settings . . . . . . . . . . . . . . .131
Configuring Global Firewall Settings . . . . . . . . . . . . . . . . . . . 131
Managing the Black List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Configuring IP Filters and Blocked Protocols .135
Configuring IP Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Viewing Your IP Filter Configuration . . . . . . . . . . . . . . 136
Configuring IP Filter Global Settings . . . . . . . . . . . . . . 137
Creating IP Filter Rules . . . . . . . . . . . . . . . . . . . . . . . . 138
IP filter rule examples . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Viewing IP Filter Statistics . . . . . . . . . . . . . . . . . . . . . . 147
Managing Current IP Filter Sessions . . . . . . . . . . . . . . 148

Table of Contents
v
Blocked Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
Viewing DSL Line Information . . . . . . . . . . . . . . 153
Administrative Tasks . . . . . . . . . . . . . . . . . . . . . 157
Configuring User Names and Passwords . . . . . . . . . . . . . . . .157
Changing Login Passwords . . . . . . . . . . . . . . . . . . . . .157
Viewing System Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159
Viewing the Alarm Table . . . . . . . . . . . . . . . . . . . . . . . .159
Upgrading the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160
Using Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161
Modifying Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163
Overview of IP port numbers . . . . . . . . . . . . . . . . . . . .163
Modifying the ADSL Barricade’s port numbers . . . . . . .164
Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167
Structure of an IP address . . . . . . . . . . . . . . . . . . . . . .167
Network classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
Subnet masks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
Appendix B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Binary Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Bits and bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 175
Technical Specifications . . . . . . . . . . . . . . . . . . 181
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Legal Information and Contacts . . . . . . . . . . . . . vii

1
INTRODUCTION
Congratulations on becoming the owner of the ADSL Barricade,
a 4-port ADSL Router with built-in 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.
•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).
•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.
•ThetermsLANandnetworkareusedinterchangeablytorefer
to a group of Ethernet-connected computers at one site.

Using this Document
3
Typographical conventions
•Italics are used to identify terms that are defined
in the Terminology.
•Square brackets are used for items you select from
menus and drop-down lists.
Special messages
This document uses the following statement to call your attention
to specific instructions or explanations.
Note: Provides clarifying or non-essential information
on the current topic.
Definition: Explains terms or acronyms that may be unfamiliar
to many readers. These terms are also included in the Terminology.
Warning: Provides messages of high importance, including
messages relating to personal safety or system integrity.