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.

5
GETTING TO KNOW THE
ADSL BARRICADE
Package Contents
•One ADSL Barricade.
•One Power adapter.
•One RJ-45 Ethernet cable.
•One RJ-11 Standard phone/DSL line cable.
•Installation utility and Documentation CD.
•Quick Installation Guide.

Getting to Know the ADSL Barricade
6
Hardware Description
Front Panel
(*Alarm LED is optional, and for manufactory only*)
Table 1. Front Panel and LEDs
Rear Panel
Table 2. Rear Panel Connections
LED Label Power Link TX/RX Ethernet
1 2 3 4
Color Status Green Green Green Green / 100 Mbps
Yellow / 10 Mbps
Green Steady Power On ADSL line
is trained. DSL Transmitting/
Receiving
Link
Green Blink N/A Training TX/RX Transmitting/
Receiving
Yellow Steady N/A N/A N/A Link
Yellow Blink N/A N/A N/A Transmitting/
Receiving
OFF Power Off
No Connection No TX/RX No Connection
Rear Panel Connector Description
Power Supply 12V, 1.2A
Reset and Restore Factory Defaults Button If depressed for 1-2 seconds:
reset.
If depressed for 5 seconds or
more: reset to factory default.
DSL Port RJ-11 phone connector
Ethernet Port Four 10/100M BASE-T RJ-45
connectors

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.
•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.
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 ADSL 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.
Note: ADSL splitters/microfilters are included with some
models.
Wall Jack
To a hub: use cross-
over cable to uplink
port or straight cable
to standard port
or
To a PC: use a
cross-over cable
AC adapter
Networked Computers
Stand-alone computer
ADSL Barricade
Hub/switch (for local
area network)

Configuring Your Computers
9
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 devices
such as hubs or switches.
Configuring Your Computers
This section provides instructions for configuring the Internet
settings on your computers to work with the ADSL Barricade
.
Before you begin
By default, the ADSL Barricade automatically assigns all required
Internet settings to your PCs. You need only to configure the PCs
to accept the information when it is assigned.
Note: In some cases, you may want to assign Internet
information manually to some or all of your computers
rather than allow the ADSL Barricade to do so. See
Assigning static Internet Information to your PCs on
page 16 for instructions.

Quick Start
10
If you have connected your PC of LAN via Ethernet to the ADSL
Barricade
, follow the instructions that correspond to the operating
system installed on your PC.
Windows®XP
1. In the Windows task bar, click the [Start] button, and then
click [Control Panel].
2. Double-click the [Network Connections] icon.
3. In the [LAN or High-Speed Internet] window, right-click on
the icon corresponding to your network interface card (NIC)
and select [Properties]. (Often, this icon is labeled [Local
Area Connection].) The [Local Area Connection] dialog
box displays a list of currently installed network items.
4. Ensure that the check box to the left of the item labeled
[Internet Protocol (TCP/IP)] is checked, and click [Properties].
5.
In the [Internet Protocol (TCP/IP) Properties] dialog box, click
the radio button labeled [Obtain an IP address automatically].
Also click the radio button labeled [Obtain DNS server address
automatically].
6. Click [OK] twice to confirm your changes, and close
the Control Panel.

Configuring Your Computers
11
Windows 2000
First, check for the IP protocol and, if necessary, install it.
1. In the Windows task bar, click the [Start] button,
point to [Settings], and then click [Control Panel].
2. Double-click the [Network and Dial-up Connections] icon.
3.
In the [Network and Dial-up Connections] window, right-click the
[Local Area Connection] icon, and then select [Properties]. The
[Local Area Connection Properties] dialog box displays a list
of currently installed network components. If the list includes
[Internet Protocol (TCP/IP)], then the protocol has already
been enabled. Skip to Step 10.
4. If [Internet Protocol (TCP/IP)] does not appear as an installed
component, click [Install...].
5. In the [Select Network Component Type] dialog box, select
[Protocol], and then click [Add…].
6. Select [Internet Protocol (TCP/IP)] in the [Network Protocols]
list, and then click [OK]. You may be prompted to install files
from your Windows 2000 installation CD or other media.
Follow the instructions to install the files.
7. If prompted, click [OK] to restart your computer with the new
settings. Next, configure the PCs to accept IP information
assigned by the ADSL Barricade.
8. In the [Control Panel], double-click the [Network and Dial-up
Connections] icon.
9. In the [Network and Dial-up Connections] window, right-click
the [Local Area Connection] icon, and then select [Properties] .

Quick Start
12
10. In the [Local Area Connection Properties] dialog box, select
[Internet Protocol (TCP/IP)], and then click [Properties].
11.
In the [Internet Protocol (TCP/IP) Properties] dialog box, click
the radio button labeled [Obtain an IP address automatically].
Also click the radio button labeled [Obtain DNS server address
automatically].
12. Click [OK] twice to confirm and save your changes,
and then close the Control Panel.
Windows Me
1. In the Windows task bar, click the [Start] button,
point to [Settings], and then click [Control Panel].
2. Double-click the [Network and Dial-up Connections] icon.
3. In the [Network and Dial-up Connections] window, right-click
the [Network] icon, and then select [Properties]. The [Network
Properties] dialog box displays a list of currently installed
network components. If the list includes Internet Protocol
(TCP/IP), then the protocol has already been enabled.
Skip to Step 11.
4. If [Internet Protocol (TCP/IP)] does not appear as an installed
component, click [Add…].
5. In the [Select Network Component Type] dialog
box, select [Protocol], and then click [Add…].
6. Select [Microsoft] in the [Manufacturers] box.
7. Select [Internet Protocol (TCP/IP)] in the [Network Protocols]
list, and then click [OK]. You may be prompted to install files
from your Windows Me installation CD or other media.
Follow the instructions to install the files.

Configuring Your Computers
13
8.
If prompted, click [OK] to restart your computer with the new
settings. Next, configure the PCs to accept IP information
assigned by the ADSL Barricade.
9. In the Control Panel, double-click the [Network and Dial-up
Connections] icon.
10. In the [Network and Dial-up Connections] window, right-click
the [Network] icon, and then select [Properties].
11. In the [Network Properties] dialog box, select [TCP/IP],
and then click [Properties].
12. In the [TCP/IP Settings] dialog box, click the radio button
labeled [Server assigned IP address]. Also click the radio
button labeled [Server assigned name server address].
13. Click [OK] twice to confirm and save your changes,
and then close the Control Panel.
Windows 95, 98
First, check for the IP protocol and, if necessary, install it.
1. In the Windows task bar, click the [Start] button,
point to [Settings], and then click [Control Panel].
2. Double-click the [Network] icon. The [Network] dialog box
displays a list of currently installed network components.
If the list includes [TCP/IP], then the protocol has already
been enabled. Skip to Step 9.
3.
If [TCP/IP] does not appear as an installed component, click
[Add…]. The [Select Network Component Type] dialog box
appears.

Quick Start
14
4. Select [Protocol], and then click [Add...]. The [Select Network
Protocol] dialog box appears.
5.
Click on [Microsoft] in the [Manufacturers] list box, and then click
[TCP/IP] in the [Network Protocols] list box.
6.
Click [OK] to return to the [Network] dialog box, and then click
[OK] again. You may be prompted to install files from your
Windows 95/98 installation CD. Follow the instructions
to install the files.
7.
Click [OK] to restart the PC and complete the TCP/IP installation.
Next, configure the PCs to accept IP information assigned by the
ADSL Barricade.
8. Open the [Control Panel] window, and then click
the [Network] icon.
9. Select the network component labeled [TCP/IP], and then
click [Properties]. If you have multiple TCP/IP listings, select
the listing associated with your network card or adapter.
10.
In the [TCP/IP Properties] dialog box, click the [IP Address] tab.
11. Click the radio button labeled [Obtain an IP address
automatically].
12. Click the [DNS Configuration] tab, and then click the
radio button labeled [Obtain an IP address automatically].
13. Click [OK] twice to confirm and save your changes.
You will be prompted to restart Windows.
14. Click [Yes].