I have a Cisco 1720 router with a WIC T1 DSU on the Serial0 interface. FastEthernet0 on the LAN interface. I would like to setup an Internet Security Appliance on my network. The Security Appliance requires that the WAN IP is connected directly to it's WAN interface. I believe I need to setup bridging on the the Cisco 1720to allow my Security appliance to directly connect to the WAN IP.
Any help as how to properly configure this would be appreciated.