User guide
        ADSL2+ 4-Port Ethernet USB Wireless-G Router - User Guide 
4.5.22 Bridge Filters 
The bridge filtering mechanism provides a way for the users to define rules to allow/deny frames 
through the bridge based on source MAC address, destination MAC address and/or frame type. 
When bridge filtering is enabled, each frame is examined against each defined filter rules 
sequentially. When a match is determined, the appropriate filtering action (determined by the 
access type selected i.e. allow or deny) is performed. Please note that the bridge filter will only 
examine frames from interfaces, which are part of the bridge itself. Twenty filter rules are 
supported with bridge filtering. See Figure 1-34. 
Figure 1-34 : MAC Filtering (Bridge Filters) 
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