SMC Networks Barricade SMC7904WBRA User manual

38 Tesla
Irvine, CA 92618
Phone: [phone]
54 Mbps Wireless 4-port
Router with Built-in
ADSL Modem
From SMC’s line of award-winning connectivity solutions
October 2004 R.01 F1.0

Information furnished is believed to be accurate and reliable. However, no responsibility is assumed by our
company for its use, nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of our
company. We reserve the right to change specifications at any time without notice.
Copyright © 2004 by
SMC Networks, Inc.
38 Tesla
Irvine, CA 92618
All rights reserved.
Trademarks:
SMC is a registered trademark; and Barricade g is a trademark of SMC Networks, Inc. Other product and
company names are trademarks or registered trademarks of their respective holders.

i
L
IMITED
W
ARRANTY
Limited Warranty Statement: SMC Networks, Inc. (“SMC”) warrants its products to be
free from defects in workmanship and materials, under normal use and service, for the
applicable warranty term. All SMC products carry a standard 90-day limited warranty from
the date of purchase from SMC or its Authorized Reseller. SMC may, at its own discretion,
repair or replace any product not operating as warranted with a similar or functionally
equivalent product, during the applicable warranty term. SMC will endeavor to repair or
replace any product returned under warranty within 30 days of receipt of the product.
The standard limited warranty can be upgraded to a Limited Lifetime* warranty by registering
new products within 30 days of purchase from SMC or its Authorized Reseller. Registration
can be accomplished via the enclosed product registration card or online via the SMC web
site. Failure to register will not affect the standard limited warranty. The Limited Lifetime
warranty covers a product during the Life of that Product, which is defined as the period of
time during which the product is an “Active” SMC product. A product is considered to be
“Active” while it is listed on the current SMC price list. As new technologies emerge, older
technologies become obsolete and SMC will, at its discretion, replace an older product in its
product line with one that incorporates these newer technologies. At that point, the obsolete
product is discontinued and is no longer an “Active” SMC product. A list of discontinued
products with their respective dates of discontinuance can be found at:
http://www.smc.com/index.cfm?action=customer_service_warranty.
All products that are replaced become the property of SMC. Replacement products may be
either new or reconditioned. Any replaced or repaired product carries either a 30-day limited
warranty or the remainder of the initial warranty, whichever is longer. SMC is not responsible
for any custom software or firmware, configuration information, or memory data of
Customer contained in, stored on, or integrated with any products returned to SMC pursuant
to any warranty. Products returned to SMC should have any customer-installed accessory or
add-on components, such as expansion modules, removed prior to returning the product for
replacement. SMC is not responsible for these items if they are returned with the product.
Customers must contact SMC for a Return Material Authorization number prior to returning
any product to SMC. Proof of purchase may be required. Any product returned to SMC
without a valid Return Material Authorization (RMA) number clearly marked on the outside
of the package will be returned to customer at customer’s expense. For warranty claims within
North America, please call our toll-free customer support number at [phone].
Customers are responsible for all shipping charges from their facility to SMC. SMC is
responsible for return shipping charges from SMC to customer.

L
IMITED
W
ARRANTY
ii
WARRANTIES EXCLUSIVE: IF AN SMC PRODUCT DOES NOT OPERATE AS
WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR OR
REPLACEMENT OF THE PRODUCT IN QUESTION, AT SMC’S OPTION. THE
FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN
LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED,
EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE,
INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. SMC NEITHER ASSUMES NOR
AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER
LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION,
MAINTENANCE OR USE OF ITS PRODUCTS. SMC SHALL NOT BE LIABLE
UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THE
ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY
CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER
INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR
ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY
ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
LIMITATION OF LIABILITY: IN NO EVENT, WHETHER BASED IN CONTRACT
OR TORT (INCLUDING NEGLIGENCE), SHALL SMC BE LIABLE FOR
INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE
DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE, LOSS OF BUSINESS, OR
OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE
SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR
INTERRUPTION OF ITS PRODUCTS, EVEN IF SMC OR ITS AUTHORIZED
RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES
OR THE LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
CONSUMER PRODUCTS, SO THE ABOVE LIMITATIONS AND EXCLUSIONS
MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS, WHICH MAY VARY FROM STATE TO STATE. NOTHING IN THIS
WARRANTY SHALL BE TAKEN TO AFFECT YOUR STATUTORY RIGHTS.
* SMC will provide warranty service for one year following discontinuance from the active
SMC price list. Under the limited lifetime warranty, internal and external power supplies, fans,
and cables are covered by a standard one-year warranty from date of purchase.
SMC Networks, Inc.
38 Tesla
Irvine, CA 92618

iii
C
OMPLIANCES
Federal Communication Commission Interference
Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that the interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected
• Consult the dealer or an experienced radio/TV technician for help
FCC Caution: To assure continued compliance, (example - use only shielded interface cables
when connecting to computer or peripheral devices) any changes or modifications not
expressly approved by the party responsible for compliance could void the user’s authority to
operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
IMPORTANT STATEMENT
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with a minimum distance of
20 cm (8 in) between the radiator and your body. This transmitter must not be co-located or
operating in conjunction with any other antenna or transmitter.
FCC - Part 68
This equipment complies with Part 68 of the FCC rules. This equipment comes with a label
attached to it that contains, among other information, the FCC registration number and
ringer equivalence number (REN) for this equipment. If requested, this information must be
provided to the telephone company.
This equipment uses the following USOC jacks: RJ-11C.

C
OMPLIANCES
iv
The REN is used to determine the quantity of devices that may be connected to the
telephone line. Excessive RENs on the telephone line may result in the devices not ringing in
response to an incoming call. In most, but not all areas, the sum of the RENs should not
exceed five (5.0). To be certain of the number of devices that may be connected to the line, as
determined by the total RENs, contact the telephone company to determine the maximum
REN for the calling area.
If this equipment causes harm to the telephone network, the telephone company will notify
you in advance that temporary discontinuance of service may be required. If advance notice is
not practical, the telephone company will notify the customer as soon as possible. Also, you
will be advised of your right to file a complaint with the FCC if you believe it is necessary.
The telephone company may make changes in its facilities, equipment, operations, or
procedures that will provide advance notice in order for you to make the necessary
modifications in order to maintain uninterrupted service.
If trouble is experienced with this equipment, please contact our company at the numbers
shown on back of this manual for repair and warranty information. If the trouble is causing
harm to the telephone network, the telephone company may request you to remove the
equipment from the network until the problem is resolved.
No repairs may be done by the customer.
This equipment cannot be used on telephone company-provided coin service. Connection to
Party Line Service is subject to state tariffs.
When programming and/or making test calls to emergency numbers:
• Remain on the line and briefly explain to the dispatcher the reason for the call.
• Perform such activities in off-peak hours such as early morning or late evenings.
The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a
computer or other electronic device to send any message via a telephone facsimile machine
unless such message clearly contains, in a margin at the top or bottom of each transmitted
page or on the first page of the transmission the date and time it is sent and an identification
of the business, other entity, or individual sending the message and the telephone number of
the sending machine or such business, other entity, or individual.
In order to program this information into your facsimile, refer to your communications
software user manual.
Industry Canada - Class B
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus as set out in the interference-causing equipment standard entitled “Digital
Apparatus,” ICES-003 of Industry Canada.
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils
numériques de Classe B prescrites dans la norme sur le matérial brouilleur: “Appareils
Numériques,” NMB-003 édictée par l’Industrie.

C
OMPLIANCES
v
Australia AS/NZS 3548 (1995) - Class B
SMC contact for products in Australia is:
SMC-Australia
L9, 123 Epping Rd.,
North Ryde, NSW Australia
Phone: [phone]
Fax: [phone]
EC Conformance Declaration
SMC contact for these products in Europe is:
SMC Networks Europe,
Edificio Conata II,
Calle Fructuós Gelabert 6-8, 2o, 4a,
08970 - Sant Joan Despí,
Barcelona, Spain.
Marking by the above symbol indicates compliance with the Essential Requirements of the
R&TTE Directive of the European Union (1999/5/EC). This equipment meets the
following conformance standards:
EN 300 328-1 December 2001 V1.3.1
EN 300 328-2 December 2001 V1.2.1
EN 301 489-1 September 2001 V1.4.1
EN 301 489-17 September 2000 V1.2.1
EN 60950 January 2000
ACN 066 352010
A.C.N 096 592 442

C
OMPLIANCES
vi
Safety Compliance
Wichtige Sicherheitshinweise (Germany)
1. Bitte lesen Sie diese Hinweise sorgfältig durch.
2. Heben Sie diese Anleitung für den späteren Gebrauch auf.
3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine
Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur
Reinigung.
4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein.
5. Das Gerät ist vor Feuchtigkeit zu schützen.
6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen oder Fallen
könnte Beschädigungen hervorrufen.
7. Die Belüftungsöffnungen dienen der Luftzirkulation, die das Gerät vor Überhitzung
schützt. Sorgen Sie dafür, daß diese Öffnungen nicht abgedeckt werden.
8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.
9. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollte auch
nichts auf der Leitung abgestellt werden.
10. Alle Hinweise und Warnungen, die sich am Gerät befinden, sind zu beachten.
11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz
trennen. Somit wird im Falle einer Überspannung eine Beschädigung vermieden.
12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das
Gerät gelangen. Dies könnte einen Brand bzw. elektrischen Schlag auslösen.
13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit
nur von authorisiertem Servicepersonal geöffnet werden.
14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von
einer qualifizierten Servicestelle zu überprüfen:
a. Netzkabel oder Netzstecker sind beschädigt.
b. Flüssigkeit ist in das Gerät eingedrungen.
c. Das Gerät war Feuchtigkeit ausgesetzt.
d. Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert oder Sie mit
Hilfe dieser Anleitung keine Verbesserung erzielen.
e. Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f. Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.
15. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden. Für einen
Nennstrom bis 6 A und einem Gerätegewicht größer 3 kg ist eine Leitung nicht leichter
als H05VV-F, 3G, 0.75 mm2einzusetzen.
Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 beträgt 70 dB(A) oder
weniger.

vii
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ABLE OF
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ONTENTS
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
About the Barricade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
ISP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Connect the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Connect the ADSL Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Phone Line Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Attach to Your Network Using Ethernet Cabling . . . . . . . . . . . 2-8
Connect the Power Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
3 Configuring Client PC . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
TCP/IP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Windows 98/Me . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Obtain IP Settings from Your Barricade . . . . . . . . . . . . . . . . . . . 3-6
Windows NT 4.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Obtain IP Settings from Your Barricade . . . . . . . . . . . . . . . . . . . 3-9
Windows 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Obtain IP Settings from Your Barricade . . . . . . . . . . . . . . . . . . 3-12
Windows XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Obtain IP Settings from Your Barricade . . . . . . . . . . . . . . . . . . 3-14
Configuring Your Macintosh Computer . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

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4 Configuring the Barricade . . . . . . . . . . . . . . . . . . . . . . 4-1
Navigating the Management Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Making Configuration Changes . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Setup Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Channel and SSID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Time Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Parameter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Confirm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Parameter Setting - Country or ISP Not Listed . . . . . . . . . . . . . 4-9
Advanced Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
WAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
WDS (Wireless Distribution System) . . . . . . . . . . . . . . . . . . . . 4-37
NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43
Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
UPnP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
ADSL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
DDNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-68
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69
Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-73
Finding the MAC address of a Network Card . . . . . . . . . . . . . . . . . . . 4-76
Windows 98/ME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76
Windows NT4/2000/XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76
Macintosh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76
Linux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76

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A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
B Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Wiring Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
RJ-45 Port Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
ADSL Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
Wiring Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
C Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

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1-1
C
HAPTER
1
I
NTRODUCTION
Congratulations on your purchase of the ADSL BarricadeTM g, hereafter
referred to as the “Barricade”. We are proud to provide you with a
powerful yet simple communication device for connecting your local area
network (LAN) to the Internet. For those who want to surf the Internet in
the most secure way, this router provides a convenient and powerful
solution.
About the Barricade
The Barricade provides Internet access to multiple users by sharing a
single-user account. Support is provided for both wired and wireless
devices. New technology provides wireless security via Wired Equivalent
Privacy (WEP) encryption and MAC address filtering. It is simple to
configure and can be up and running in minutes.
Features and Benefits
• Internet connection to an ADSL modem via an RJ-11 ADSL port
• Local network connection via four 10/100 Mbps Ethernet ports
• On-board IEEE 802.11g wireless network adapter
• DHCP for dynamic IP configuration, and DNS for domain name
mapping

I
NTRODUCTION
1-2
• Firewall with Stateful Packet Inspection, client privileges, intrusion
detection, and NAT
• NAT also enables multi-user Internet access via a single user account,
and virtual server functionality (providing protected access to Internet
services such as web, FTP, e-mail, and Telnet)
• VPN pass-through (IPSec-ESP Tunnel mode, L2TP, PPTP)
• User-definable application sensing tunnel supports applications
requiring multiple connections
• Easy setup through a web browser on any operating system that
supports TCP/IP
• Compatible with all popular Internet applications
Applications
Many advanced networking features are provided by the Barricade:
• Wireless and Wired LAN
The Barricade provides connectivity to 10/100 Mbps devices, and
wireless IEEE 802.11g compatible devices, making it easy to create a
network in small offices or homes.
• Internet Access
This device supports Internet access through an ADSL connection.
Since many DSL providers use PPPoE or PPPoA to establish
communications with end users, the Barricade includes built-in clients
for these protocols, eliminating the need to install these services on
your computer.

A
PPLICATIONS
1-3
• Shared IP Address
The Barricade provides Internet access for up to 253 users via a single
shared IP address. Using only one ISP account, multiple users on your
network can browse the web at the same time.
•VirtualServer
If you have a fixed IP address, you can set the Barricade to act as a
virtual host for network address translation. Remote users access
various services at your site using a constant IP address. Then,
depending on the requested service (or port number), the Barricade
can route the request to the appropriate server (at another internal IP
address). This secures your network from direct attack by hackers, and
provides more flexible management by allowing you to change
internal IP addresses without affecting outside access to your
network.
• DMZ Host Support
Allows a networked computer to be fully exposed to the Internet.
This function is used when NAT and firewall security prevent an
Internet application from functioning correctly.
• Security
The Barricade supports security features that deny Internet access to
specified users, or filter all requests for specific services that the
administrator does not want to serve. The Barricade’s firewall also
blocks common hacker attacks, including IP Spoofing, Land Attack,
Ping of Death, IP with zero length, Smurf Attack, UDP port
loopback, Snork Attack, TCP null scan, and TCP SYN flooding. WEP
(Wired Equivalent Privacy), SSID, and MAC filtering provide security
over the wireless network.

I
NTRODUCTION
1-4
• Virtual Private Network (VPN)
The Barricade supports three of the most commonly used VPN
protocols — PPTP, L2TP, and IPSec. These protocols allow remote
users to establish a secure connection to their corporate network. If
your service provider supports VPNs, then these protocols can be
used to create an authenticated and encrypted tunnel for passing
secure data over the Internet (i.e., a traditionally shared data network).
The VPN protocols supported by the Barricade are briefly described
below.
• Point-to-Point Tunneling Protocol — Provides a secure tunnel
for remote client access to a PPTP security gateway. PPTP
includes provisions for call origination and flow control required
by ISPs.
• L2TP merges the best features of PPTP and L2F — Like PPTP,
L2TP requires that the ISP’s routers support the protocol.
• IP Security — Provides IP network-layer encryption. IPSec can
support large encryption networks (such as the Internet) by using
digital certificates for device authentication.

2-1
C
HAPTER
2
I
NSTALLATION
Before installing the ADSL BarricadeTM g, verify that you have all the
items listed under the Package Contents list. If any of the items are missing
or damaged, contact your local distributor. Also be sure that you have all
the necessary cabling before installing the Barricade. After installing the
Barricade, refer to “Configuring the Barricade” on page 4-1.
Package Contents
After unpacking the Barricade, check the contents of the box to be sure
you have received the following components:
• Barricade ADSL Router (SMC7904WBRA/WBRB)
• Power adapter
• One CAT-5 Ethernet cable (RJ-45)
• Telephone patch cable (RJ-11)
• Quick install guide
• Documentation CD
Immediately inform your dealer in the event of any incorrect, missing, or
damaged parts. If possible, please retain the carton and original packing
materials in case there is a need to return the product.

I
NSTALLATION
2-2
System Requirements
You must meet the following minimum requirements:
• ADSL line installed by your Internet Service Provider.
• A PC using a fixed IP address or dynamic IP address assigned via
DHCP, as well as a gateway server address and DNS server address
from your service provider.
• A computer equipped with a 10/100 Mbps network adapter, a
USB-to-Ethernet converter or an IEEE 802.11g wireless network
adapter.
• TCP/IP network protocols installed on each PC that will access the
Internet.
• A Java-enabled web browser, such as Microsoft Internet Explorer 5.0
or above installed on one PC at your site for configuring the Barricade.
Hardware Description
The Barricade contains an integrated ADSL modem and connects to the
Internet or to a remote site using its RJ-11 WAN port. It can be connected
directly to your PC or to a local area network using any of the four Fast
Ethernet LAN ports.
Access speed to the Internet depends on your service type. Full-rate ADSL
provides up to 8 Mbps downstream and 640 kbps upstream. G.lite (or
splitterless) ADSL provides up to 1.5 Mbps downstream and 512 kbps
upstream. However, you should note that the actual rate provided by
specific service providers may vary dramatically from these upper limits.
Data passing between devices connected to your local area network can
run at up to 100 Mbps over the Fast Ethernet ports and 54 Mbps over the
built-in wireless network adapter.