SMC Networks ADSL2 Barricade N Pro SMC7904WBRA-N User manual

ADSL2 Barricade N
Draft 11n Wireless 4-port Annex A ADSL2/2+ Modem Router
SMC7904WBRA-N

Router with built-in
ADSL2/2+ Modem
From SMC’s line of award-winning connectivity solutions
May 2008
R.02 F/W 0.11

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 © 2008 by
SMC Networks, Inc.
20 Mason
Irvine, CA 92618
All rights reserved.
Trademarks:
SMC is a registered trademark; and Barricade 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.

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
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.
Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.
IMPORTANT NOTE:
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 minimum distance 20cm
between the radiator & your body.
This transmitter must not be co-located or operating in conjunction with any other antenna
or transmitter.
IEEE 802.11b or 802.11g operation of this product in the U.S.A. is firmware-limited to
channels 1 through 11.
SMC contact for these products in AUSTRALIA is:
SMC Networks Australia
1 / 14 Wellington Street
ACACIA RIDGE, QLD 4110
Tel [phone]

C
OMPLIANCES
iv
FCC - Part 68
This equipment complies with Part 68 of the FCC rules and the requirements adopted by the
ACTA. On the bottom of this equipment is a label that contains, among other information, a
product identifier in the format US: ACYDL01B7904WBRAN. If requested, this number
must be provided to the telephone company.
The REN is useful to determine the quantity of devices you may connect to your telephone
line and still have all of those devices ring when your telephone number is called. In most, but
not all areas, the sum of the REN of all devices connected to one line should not exceed five
(5.0). To be certain of the number of devices you may connect to you line, as determined by
the REN, you should contact your local telephone company to determine the maximum
REN for your calling area.
If your equipment causes harm to the telephone network, the telephone company may
discontinue your service temporarily. If possible, they will notify you in advance. But if
advance notice is not practical, you will be notified as soon as possible. You will be informed
of your right to file a complaint with the FCC. Your telephone company may make changes
in it is facilities, equipment, operations or procedures that could affect the proper functioning
of your equipment. If they do, you will be notified in advance to give you an opportunity to
maintain uninterrupted telephone service.
If you experience trouble with this telephone equipment, Please contact the following address
and phone number for information on obtaining service or repairs.
The telephone company may ask that you disconnect this equipment from the network until
the problem has been corrected or until you are sure that the equipment is not
malfunctioning.
This equipment may not be used on coin service provided by the telephone company.
Connection to party lines is subject to state tariffs.

C
OMPLIANCES
v
CE Mark Declaration of
Conformance for EMI and Safety
(EEC)
This device complies with the essential requirements of the R&TTE Directive 1999/5/EC.
The following references have been applied in order to prove presumption of compliance
with the R&TTE Directive 1999/5/EC:
• EN 300 328
• EN 301 489
• EN 60950-1
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.
Countries of Operation & Conditions of Use in the
European Community
This device is intended to be operated in all countries of the European Community.
Requirements for indoor vs. outdoor operation, license requirements and allowed channels of
operation apply in some countries as described below:
Note: The user must use the configuration utility provided with this product to ensure the
channels of operation are in conformance with the spectrum usage rules for European
Community countries as described below.
• This device will automatically limit the allowable channels determined by the current
country of operation. Incorrectly entering the country of operation may result in illegal
operation and may cause harmful interference to other system. The user is obligated to
ensure the device is operating according to the channel limitations, indoor/outdoor
restrictions and license requirements for each European Community country as described
in this document.
This device may be operated indoors or outdoors in all countries of the European Community
using the 2.4 GHz band: Channels 1 - 13.

C
OMPLIANCES
vi
Declaration of Conformity in Languages of the
European Community
English Hereby, SMC Networks, declares that this Radio LAN device is in
compliance with the essential requirements and other relevant provisions
of Directive 1999/5/EC.
Finnish Valmistaja SMC Networks vakuuttaa täten että Radio LAN device
tyyppinen laite on direktiivin 1999/5/EY oleellisten vaatimusten ja sitä
koskevien direktiivin muiden ehtojen mukainen.
Dutch Hierbij verklaart SMC Networks dat het toestel Radio LAN device in
overeenstemming is met de essentiële eisen en de andere relevante
bepalingen van richtlijn 1999/5/EG
Bij deze SMC Networks dat deze Radio LAN device voldoet aan de
essentiële eisen en aan de overige relevante bepalingen van Richtlijn 1999/
5/EC.
French Par la présente SMC Networks déclare que l'appareil Radio LAN device est
conforme aux exigences essentielles et aux autres dispositions pertinentes
de la directive 1999/5/CE
Swedish Härmed intygar SMC Networks att denna Radio LAN device står I
överensstämmelse med de väsentliga egenskapskrav och övriga relevanta
bestämmelser som framgår av direktiv 1999/5/EG.
Danish Undertegnede SMC Networks erklærer herved, at følgende udstyr Radio
LAN device overholder de væsentlige krav og øvrige relevante krav i
direktiv 1999/5/EF
German Hiermit erklärt SMC Networks, dass sich dieser/diese/dieses Radio LAN
device in Übereinstimmung mit den grundlegenden Anforderungen und
den anderen relevanten Vorschriften der Richtlinie 1999/5/EG befindet".
(BMWi)
Hiermit erklärt SMC Networks die Übereinstimmung des Gerätes Radio
LAN device mit den grundlegenden Anforderungen und den anderen
relevanten Festlegungen der Richtlinie 1999/5/EG. (Wien)
Greek
Italian Con la presente SMC Networks dichiara che questo Radio LAN device è
conforme ai requisiti essenziali ed alle altre disposizioni pertinenti stabilite
dalla direttiva 1999/5/CE.

C
OMPLIANCES
vii
NCC Statement
(1) 經審驗合格之射頻電信終端設備，非經許可，公司、商號或使用者均不得擅自
變更頻率、加大功率或變更原設計之特性及功能。
(2) 射頻電信終端設備之使用不得影響飛航安全及干擾合法通信； 經發現有干擾
現象時， 應立即停用， 並改善至無干擾時方得繼續使用。所謂合法通信， 係指依
電信法規定作業之無線電信。
(3) 輸入、製造射頻電信終端設備之公司、商號或其使用者違反本辦法規定，擅自
使用 或變更無線電頻率，電功率者， 除依電信法規定處罰外， 電信總局並得撤銷
其審驗合格證明。
( 4 ) 本機限在不干擾合法電台與不受被干擾保障條件下於室內使用。
(5) 為減少電磁波干擾 , 請妥適使用。
Spanish Por medio de la presente SMC Networks declara que el Radio LAN device
cumple con los requisitos esenciales y cualesquiera otras disposiciones
aplicables o exigibles de la Directiva 1999/5/CE
Portuguese SMC Networks declara que este Radio LAN device está conforme com os
requisitos essenciais e outras disposições da Directiva 1999/5/CE.

C
OMPLIANCES
viii
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.

ix
T
ABLE OF
C
ONTENTS
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
About the Barricade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
ISP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Connect the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Connect the ADSL Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Attach to Your Network Using Ethernet Cabling . . . . . . . . . . . 2-7
Connect the Power Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Connection Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
3 Configuring Client PC . . . . . . . . . . . . . . . . . . . . . 3-1
TCP/IP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Windows 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Obtain IP Settings from Your Barricade . . . . . . . . . . . . . . . . . . . 3-3
Windows XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Obtain IP Settings from Your Barricade . . . . . . . . . . . . . . . . . . . 3-6
Configuring Your Macintosh Computer . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

T
ABLE OF
C
ONTENTS
x
4 Configuring the Barricade . . . . . . . . . . . . . . . . . .4-1
Navigating the Management Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Making Configuration Changes . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Setup Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Time Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
ADSL Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Parameter Setting - Country or ISP Not Listed . . . . . . . . . . . . . 4-7
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Configuration parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
WAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44
Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49
Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53
SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-66
UPnP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69
ADSL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
DDNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-73
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-79
Finding the MAC address of a Network Card . . . . . . . . . . . . . . . . . . . 4-82
Windows 2000/XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82
Macintosh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82
Linux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82

T ABLE OF C ONTENTS
xi
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

1-1
C HAPTER 1
I NTRODUCTION
Congratulations on your purchase of the 802.11n ADSL2 BarricadeTM,
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. It is simple to configure and can be up and running in
minutes.
The Barricade is compliant with the next generation IEEE 802.11n draft
v2.0 specification while maintaining full backwards compatibility with the
current 802.11b/g standards.
802.11n builds upon previous 802.11 standards by adding MIMO
(multiple-input multiple-output). MIMO uses multiple transmitter and
receiver antennas to allow for increased data throughputs for up to
300 Mbps.
This provides sufficient bandwidth to stream HD video, listen to digital
music, play online games, transfer large files, make VoIP calls and surf the
Internet simultaneously.

I NTRODUCTION
1-2
Features and Benefits
• Intergrated ADSL modem for connecting to ADSL line
• Fully backward compatible with 802.11 g/802.11 b networks
• Wireless speeds up to 300 Mbps.
• Increased speed and coverage - up to 5 times the speed of 802.11g
• Local network connection via four 10/100 Mbps Ethernet ports
• DHCP for dynamic IP configuration, and DNS Proxy/Relay for
domain name mapping
• 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

A PPLICATIONS
1-3
Applications
Many advanced networking features are provided by the Barricade:
• Wired and Wireless LAN
The Barricade provides connectivity to 10/100 Mbps devices, and
wireless connection speed up to 300 Mbps. This router is fully
compliant with specifications defined in IEEE 802.11b, IEEE
802.11g and IEEE 802.11n draft v2.0 standards, 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 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.
• Shared IP Address
Using only one ISP account, multiple users on your network can
access the Internet at the same time.
• Virtual Server
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.

I NTRODUCTION
1-4
• 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.
• 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 BarricadeTM, 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 BarricadeTM on page 4-1.
Package Contents
After unpacking, check the contents of the box to be sure you have
received the following components:
• ADSL2 Barricade N (SMC7904WBRA-N)
• Power adapter
• One CAT-5 Ethernet cable (RJ-45)
• One Telephone patch cables (RJ-11)
• Documentation CD
• One Warranty information card
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:
•ADSLInternetservice
• 2.4 GHz 802.11n draft wireless adapter or 2.4 GHz 802.11b/g wireless
adapter installed on each PC. Alternatively an Ethernet adapter can be
used.
• Internet Explorer 5.5 or above, Netscape 4.7 or above, Mozilla Firefox
1.0 or above
Hardware Description
The Barricade contains an integrated ADSL2+ modem and connects to
the Internet or to a remote site using its WAN port. This device 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 1 Mbps upstream. G.lite (or
splitterless) ADSL provides up to 1.5 Mbps downstream and 512 kbps
upstream. ADSL2+ Provides up to 24 Mbps downstream and 1 Mbps
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. Data rates up to
300 Mbps are possible with the 802.11n function enabled.
The Barricade includes an LED display on the front panel for system
power and port indications that simplifies installation and network
troubleshooting.