D-Link DSL-504 User Manual - page 27

DSL-504 ADSL Router User’s Guide 

Advanced Filtering and Firewall (Screen #3) 

In the third Advanced Filtering window you will define the terms or rule to be 

used for filtering a specific IP address. Again you can supply a name for the 

subset in the Comment field and click the box on the right to enable the Filter 

Rule.   

In the Pass or Block field select the action to be performed on the IP packets, 

the default is Pass Immediately. Any blocked packets are simply dropped. 

In the Direction field choose either In or Out from the pull down menu. Which 

one you choose depends on whether you are blocking IP packets from coming into 

the network (blocking a specific web site for example). Or alternatively you can 

block packets originating at a specific IP address from leaving the LAN; this will 

block Internet access for a specific host. 

The Protocol field allows you to define the type of protocol of the packets to be 

blocked.  

You must next specify the Source and Destination IP Addresses as well as 

their Subnet Mask. This will block the packets from or destined to any specified 

IP address from passing through the Router.  

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