54Mbps Wireless Router Model KWGR614 Reference Manual

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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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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

54Mbps Wireless Router Model KWGR614 Reference Manual

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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

54Mbps Wireless Router Model KWGR614 Reference Manual

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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.

54Mbps Wireless Router Model KWGR614 Reference Manual

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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