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N300 Wireless Router WNR2000v4
4. Click the Apply button.
To delete a keyword or domain:
1. Select Advanced > Security > Block Sites.
The Block Sites screen displays.
2. Select the keyword or domain that you want to delete from the list.
3. Click the Delete Keyword button.
Clicking the Clear List button deletes all keywords and domains from the list.
4. Click the Apply button.
Note: If you have set up email notifications (see Security Event Email
Notifications on page 68), you can be notified when someone
attempts to access a blocked site.
Exempt a Computer from Blocking and Logging
You can exempt one trusted computer from blocking and logging. The computer you exempt
needs to have a fixed IP address.
To specify a trusted computer:
1. Select Advanced > Security > Block Sites.
The Block Sites screen displays.
2. Select the Allow trusted IP address to visit blocked sites radio button.
3. In the Trusted IP Address field, type the last octet of the IP address.
The first three octets of the IP address depend on the IP address that is assigned to the
router on the LAN Setup screen.
4. Click the Apply button.
Block Services (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 the Internet sends a
request for service to a server computer, 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 the destination port number 80 is an HTTP
(web server) request.