D-Link DFL-1100 User Manual page 137

Navigate to the Firewall tab, Content Filtering section of the web-administration.
Click on Edit URL Black List to modify or append the contents of the filtering database.
To block an entire domain and all sub-domains use the following syntax
casino.com/*
*.casino.com/*
To block specific file types from download through HTTP use the following syntax
*.exe
Once finished editing the Blacklist, click Apply to save changes or Cancel to clear.
Additional Content Filters
The Firewall can also filter Java Applets, Java/VB Script, ActiveX objects, and/or cookies
from reaching the PCs behind the NetDefend Firewall. These content categories do not
require configuration other than enable or disable.
# Blocks access to the domain casino.com
# Blocks access to all sub-domains under casino.com
# Blocks executable downloads