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38 | Chapter 4. Content Filtering Settings
N750 Wireless Dual Band Gigabit Router WNDR4000 User Manual
Specify a Trusted Computer
You can exempt one trusted computer from blocking and logging. The computer you exempt
has to have a fixed IP address.
1. In the Trusted IP Address field, enter the IP address.
2. Click Apply to save your changes.
Block Services
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 destination port number 80 is an HTTP (Web
server) request.
You can block computers on your local network from using certain Internet services. This is
called service blocking or port filtering. You can add an outbound rule to block Internet access
from a local computer based on the computer, Internet site, time of day, and type of service.
To block access to Internet services:
1. Select Content Filtering > Block Services. The Block Services screen displays.
2. Enable service blocking by selecting either Per Schedule or Always, and then click Apply.
To block by schedule, be sure to specify a time period in the Schedule screen. For
information about scheduling, see Schedule Services on page 41.