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.

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.

5
GETTING TO KNOW
THE ADSL BARRICADE
Package Contents
•One ADSL Barricade.
•One Power adapter.
•One RJ-45 Ethernet cable (straight-through type).
•One RJ-11 Standard phone/DSL line cable.
•One USB Cable (Optional).
•Installation utility and Documentation CD.
•Quick Installation Guide.
Hardware Description
Front Panel
The front panel contains lights called LEDs that indicate
the status of the unit.
Table 1. Front Panel and LEDs
LED COLOR FUNCTION
PW
(Power)
Green On: Unit is powered on.
Off: Unit is powered off.
LK
(Link)
Green Flashing when ADSL data activity occurs.
May be steady when data traffic is heavy.

Getting to Know the ADSL Barricade
6
Rear Panel
The rear panel contains the ports for the unit's data and power
connections.
Table 2. Rear Panel Connections
LABEL FUNCTION
DSL Connects the device to a telephone jack for DSL communication.
Ethernet Connects the device to your PC's Ethernet port, or to the uplink port
on your LAN's hub, using the cable provided.
Yellow LED:
On: 10M LAN link established and active.
Off: No 10M LAN link.
Green LED:
On: 100M LAN link established and active.
Off: No 100M LAN link.
USB (optional) For connection to the USB port on your PC.
Reset Resets the device to the factory default configuration.
Power For connection to the supplied power adapter.

7
QUICK START
This Quick Start provides basic instructions for connecting
the ADSL Barricade to a computer or LAN and to the Internet.
•Connecting the Hardware describes how to set up the
hardware.
•Installing USB Driver describes how to install the USB driver
for the ADSL Barricade.
•Configuring Your Computers describes how to configure
Internet properties on your computer(s).
•Configuring the ADSL Barricade shows you how to configure
basic settings on the ADSL Barricade to get your LAN
connected to the Internet.
After having set up and configured the device, please follow the
instructions on page 27 to check whether it is working properly.
This Quick Start assumes that you have already established
an ADSL service with your Internet service provider (ISP).
These instructions provide a basic configuration that should
be compatible with your home or small office network setup.
Refer to the subsequent chapters for additional configuration
instructions.
Connecting the Hardware
You connect the device to the wall phone jack, the power outlet,
and your computer or network.
Warning: Before you begin, turn the power off for all devices.
These include your computer(s), your LAN hub/
switch (if applicable), and the ADSL Barricade.

Quick Start
8
Figure 1. Overview of Hardware Connections
Step 1. Connect the ADSL cable
Connect one end of the provided phone cable (RJ-11) to the port
labeled DSL on the Rear Panel of the device. Connect the other
end to your wall phone jack.
You can attach a telephone line to the device. This is helpful
when the ADSL line uses the only convenient wall phone jack.
If desired, connect the telephone cable to the port labeled Phone.
Warning:
Although you use the same type of cable, the ADSL
and Phone ports are not interchangeable. Do not
route the ADSL connection through the Phone port.
ADSL Barricade
Wall Jack
Hub/switch (for local
area network)
or
To a hub: use cross-
over cable to uplink
port or straight cable
to standard port To a PC: use a
cross-over cable
AC adapter
Stand-alone computer
Stand-alone computer
Networked Computers
(See section on installing USB
driver before connecting cable)

Installing USB Driver
9
Note:
ADSL splitters/microfilters are included with some
models.
Step 2. Connect the Ethernet cable
If you are connecting a LAN to the ADSL Barricade, attach one
end of a provided Ethernet cable to a regular hub port and the
other to the Ethernet port on the ADSL Barricade. If you are
using the ADSL Barricade with a single computer and no hub,
you must use an Ethernet cable to attach the PC directly to the
device. The cable is wired differently than the cable you would
use to connect to a hub.
Step 3. Attach the power connector
Connect the AC power adapter to the Power connector on
the back of the device and plug in the adapter to a wall outlet
or power strip.
Step 4. Power up your systems
Turn on and boot up your computer(s) and any LAN device
such as hubs or switches.
Installing USB Driver
This section details how to install the USB driver for the SMC
ADSL Barricade. If you choose to use the USB port please follow
these instructions.
Note:
Do not connect the USB cable until prompted by the
Setup Wizard.

Quick Start
10
1. Insert the Installation utility and Documentation CD into your
CD drive.
2. The USB driver is located in the [USB Driver] folder. Browse
to the [USB driver] folder and run [Setup.exe]. This will start
the USB driver installation.
3. Click [Next] to continue, then click [Accept] to accept the
license agreement.

Installing USB Driver
11
Note:
If you have Microsoft Windows 2000 or XP you will
see the following message after you [Accept] the
license agreement, click [Continue Anyway] to
continue.

Quick Start
12
4. When prompted by the [SMC ADSL Barricade Setup Wizard],
connect the ADSL Barricade to your computer using the USB
cable provided.

Installing USB Driver
13
5. After connecting the USB cable the [Found New Hardware
Wizard] will appear, click [Next] to continue.
Note:
If you have Microsoft Windows 2000 or XP you will
see the following message again, click [Continue
Anyway] to continue.