TP-Link TD-W8901GB User Manual page 50

Filter Type Selection: Select the Application Filter for the next configuration.
Application Filter: Activate or deactivate the function.
ICQ & MSN & YMSG & Real Audio/Video: Select Allow or Deny for these applications. If
you select Allow, the Router will accept the application; if you select Deny, the Router will
forbid the application.
4.5.2.4 URL
Select Application Filter as the Filter type (shown in Figure 4-35), and then you can configure
the filter rules based on URL.
TD-W8901GB 54M Wireless ADSL2+ Router User Guide
Figure 4-34
43