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Page 46 / 128 Scroll up to view Page 41 - 45
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
2-16
Safeguarding Your Network
v2.1, July 2007
•
Allow certain games and applications to function properly
. Some games and applications
need to allow additional inbound traffic in order to function. Port triggering can dynamically
allow additional service connections, as described in
“Allowing Inbound Connections To Your
Network” on page 5-1
. Another feature to solve application conflicts with the firewall is
Universal Plug and Play (UPnP), described in
“Using Universal Plug and Play” on page 5-12
.
Page 47 / 128
3-1
v2.1, July 2007
Chapter 3
Restricting Access From Your Network
This chapter describes how to use the content filtering and reporting features of the RangeMax
NEXT Wireless Router WNR834B to protect your network. You can find these features by
clicking on the Content Filtering heading in the main menu of the browser interface.
This chapter includes:
•
Content Filtering Overview
•
Blocking Access to Internet Sites
•
Blocking Access to Internet Services
•
Scheduling Blocking
•
Viewing Logs of Web Access or Attempted Web Access
•
Configuring Email Alert and Web Access Log Notifications
•
Setting the Time
Content Filtering Overview
The RangeMax NEXT Wireless Router WNR834B provides you with Web content filtering
options, plus browser activity reporting and instant alerts via email. Parents and network
administrators can establish restricted access policies based on time of day, Web addresses and
Web address keywords. You can also block Internet access by applications and services, such as
chat or games.
To configure these features of your router, click on the subheadings under the Content Filtering
heading in the main menu of the browser interface. This chapter describes the subheadings.
Blocking Access to Internet Sites
The WNR834B router allows you to restrict access based on Web addresses and Web address
keywords. Up to 255 entries are supported in the Keyword list.
Keyword application examples:
Page 48 / 128
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
3-2
Restricting Access From Your Network
v2.1, July 2007
•
If the keyword
XXX
is specified, the URL
www.badstuff.com/xxx.html
is blocked.
•
If the keyword .com is specified, only Web sites with other domain suffixes (such as .edu, .org,
or .gov) can be viewed.
To block access to Internet sites:
1.
From the main menu of the browser interface, under Content Filtering, select Block Sites.
2.
Enable keyword blocking by selecting either Per Schedule or Always.
To block by schedule, be sure to specify a time period in the Schedule menu. For scheduling,
see
“Scheduling Blocking” on page 3-5
.
3.
Add a keyword or domain by entering it in the Keyword box and clicking Add Keyword. The
keyword or domain name will then appear the “Block sites containing these keywords or
domain names” list.
–
Delete a keyword or domain name by selecting it from the list and clicking Delete
Keyword.
Figure 3-1
Page 49 / 128
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
Restricting Access From Your Network
3-3
v2.1, July 2007
–
Block all access to Internet browsing during a scheduled period by entering a dot (
.
) as the
keyword and then set a schedule in the Schedule menu.
4.
You may specify one Trusted User, which is a computer that is exempt from blocking and
logging. Specify a Trusted User by entering that computer’s IP address in the Trusted User
fields.
Since the Trusted User is identified by IP address, you should configure that computer with a
fixed IP address.
5.
Click Apply to save all your settings in the Block Sites screen.
Blocking Access to Internet Services
The WNR834B router allows you to block the use of certain Internet services by computers on
your network. This is called service blocking or port filtering. Services are functions performed by
server computers at the request of client computers. For example, Web servers serve Web pages,
time servers serve time and date information, and game hosts serve data about other players’
moves. When a computer on your network sends a request for service to a server computer on the
Internet, the requested service is identified by a service or port number. This number appears as the
destination port number in the transmitted IP packets. For example, a packet that is sent with
destination port number 80 is an HTTP (Web server) request.
To block access to Internet Services:
1.
From the main menu of the browser interface, under Content Filtering, click Block Services.
Figure 3-2
Page 50 / 128
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
3-4
Restricting Access From Your Network
v2.1, July 2007
2.
Enable service blocking by selecting either Per Schedule or Always, then click Apply.
To block by schedule, be sure to specify a time period in the Schedule menu. For scheduling,
see
“Scheduling Blocking” on page 3-5
.
3.
Specify a service for blocking by clicking Add. The Block Services Setup screen will display.
4.
From the Service Type list, select the application or service to be allowed or blocked. The list
already displays several common services, but you are not limited to these choices. To add any
additional services or applications that do not already appear, select User Defined.
5.
Select the radio box for the IP Address configuration you want to block, and enter the IP
Address(es) in the appropriate fields.
6.
Click Add to enable your Block Services Setup selections.
Configuring a User Defined Service
To define a service, first you must determine which port number or range of numbers is used by
the application. The service port numbers for many common protocols are defined by the Internet
Engineering Task Force (IETF) and published in RFC1700, “Assigned Numbers.” Service
numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of
the application. Port number information can often be determined by contacting the publisher of
the application, by asking user groups or newsgroups, or by searching.
Figure 3-3

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