Chapter 3: Restricting Access From Your Network
|
43
N150 Wireless Router User Manual
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.
Select
Block Services
under Content Filtering in the main menu. The Block Services
screen displays.
Figure 2.
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
Scheduling Blocking
on page
44.
3.
Specify a service for blocking by clicking
Add
. The Block Services Setup screen displays.
Figure 3.
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
.
