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54Mbps Wireless Router Model KWGR614 Reference Manual
3-2
Content Filtering
v1.2, September 2006
Blocking Access to Internet Sites
The 54Mpbs Wireless Router allows you to restrict access based on Web addresses and Web
address keywords. Up to 255 entries are supported in the Keyword list. The Block Sites menu is
shown in
Figure 3-1
below:
To enable keyword blocking:
1.
Select either “Per Schedule” or “Always”
2.
Click
Apply
.
3.
If you want to block by schedule, be sure to specify a time period in the Schedule menu, as
described in
“Scheduling When Blocking Will Be Enforced” on page 3-6
.
Figure 3-1
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54Mbps Wireless Router Model KWGR614 Reference Manual
Content Filtering
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v1.2, September 2006
To add a keyword or domain, type it in the Keyword box, click
Add Keyword
, then click
Apply
.
To delete a keyword or domain, select it from the list, click
Delete Keyword
, then click
Apply
.
Keyword application examples:
If the keyword “XXX” is specified, the URL <http://www.badstuff.com/xxx.html> is blocked.
If the keyword “.com” is specified, only Web sites with other domain suffixes (such as .edu or
.gov) can be viewed.
If you wish to block all Internet browsing access during a scheduled period, enter the keyword
“.” and set the schedule in the Schedule menu.
To specify a Trusted User:
1.
Enter that computer’s IP address in the Trusted User box.
2.
Click
Apply
.
You may specify one Trusted User, which is a computer that will be exempt from blocking and
logging. Since the Trusted User will be identified by an IP address, you should configure that
computer with a fixed IP address.
Blocking Access to Internet Services
The 54Mpbs Wireless Router allows you to block the use of certain Internet services by computers
on your network. This is called service blocking or port filtering. The Block Services menu is
shown below:
Figure 3-2
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54Mbps Wireless Router Model KWGR614 Reference Manual
3-4
Content Filtering
v1.2, September 2006
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 enable service blocking:
1.
Select either Per Schedule or Always
2.
Click
Apply
.
3.
If you want to block by schedule, be sure to specify a time period in the Schedule menu, as
described in
“Scheduling When Blocking Will Be Enforced” on page 3-6
.
To specify a service for blocking:
1.
Click
Add
. The Add Services menu will appear, as shown below:
2.
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”.
Figure 3-3
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54Mbps Wireless Router Model KWGR614 Reference Manual
Content Filtering
3-5
v1.2, September 2006
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 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. This information can usually be determined by contacting the publisher of the
application or from user groups of newsgroups.
1.
Enter the Starting Port and Ending Port numbers. If the application uses a single port number,
enter that number in both boxes.
2.
If you know that the application uses either TCP or UDP, select the appropriate protocol. If
you are not sure, select Both.
Configuring Service Blocking by IP Address Range
Under “Filter Services For”, you can block the specified service for a single computer, a range of
computers (having consecutive IP addresses), or all computers on your network.
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54Mbps Wireless Router Model KWGR614 Reference Manual
3-6
Content Filtering
v1.2, September 2006
Scheduling When Blocking Will Be Enforced
The 54Mpbs Wireless Router allows you to specify when blocking will be enforced. The Schedule
menu is shown below:
Use this schedule for blocking content. Check this box if you wish to enable a schedule for
Content Filtering.
Days to Block. Select days to block by checking the appropriate boxes. Select “Every day” to
check the boxes for all days.
Time of Day to Block. Select a start and end time in 23:59 format. Select “All Day” for 24
hour blocking.
Click
Apply
to make the schedule take effect.
Be sure to select your Time Zone in the E-Mail menu; see
“Configuring E-Mail Alert and Web
Access Log Notifications” on page 3-9
for details.
Figure 3-4

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