TRENDnet TDM-C400 User's Guide - Page 150

TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User's Manual Note Configuring Bridge Filters Bridge filter rules can be created to control the forwarding of incoming and outgoing data between your LAN and the Internet and within your LAN. Bridge filter rules make decisions based on the structure of the "layer 2" data packets (e.g., Ethernet packets) sent or received on the device interfaces, unlike IP filter rules, which are based on the structure of "layer 3" (e.g., IP) packets. Bridge filtering is also referred to as raw filtering. When the bridge filtering feature is enabled, the bridge/router examines each incoming layer 2 packet and compares it to the bridge filter rules. The bridge filter rules specify which bits of the packet are to be examined, and what criteria those bits must meet in order to qualify as a match for the rule. When a packet matches a rule, it can either be accepted (forwarded towards its destination), or denied (discarded), depending on the action specified in the rule. Bridge filters can be used when the unit is configured in either bridge or router mode. Configuring Global Bridge Filter Settings To display the Bridge Filter Configuration page, click the Services tab, and then click Bridge Filter in the task bar. Figure 63. Bridge Filter Configuration Page The Bridge Filter Configuration page displays a table for viewing, adding, and managing rules, and enables you to configure global bridge filter settings. For descriptions of the items in the table, see "Adding Bridge Filter Rules on page 151". You can also configure the following global settings on this page: 150