D-Link DFL-200 User Manual page 86

To configure the HTTP Content Filtering rule -
Navigate to the Firewall tab, Policy section of the web-administration.
Select the appropriate policy based on desired effect (LAN->WAN or DMZ->WAN).
Click Add New at the bottom of the list.
Give the rule a friendly name, such as http_cntnt_filtr.
Position does not matter, leave blank or choose a position.
Choose Allow as the Action.
For service choose http_outbound (already configured to use the HTTP ALG).
Select a schedule and enable IDS/IDP if desired.
Click Apply to save the changes, or click Cancel to disregard.
After clicking Apply, click the Activate button on the left-hand menu.
Select Activate Changes Now to save the configuration to flash and restart.
When the firewall has finished restarting, the HTTP Content Filtering Function will be enabled
and active. Keep in mind that depending on the type of activities your LAN participates in,
more services may need to be specified as rules in the Firewall Policy configuration to allow
said services to pass the firewall.
configuration if there is a default service configured. Custom services can also be created to
accommodate most any service needed to run through the firewall.
The steps should be similar to the DNS and HTTP
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