Linux Bridge+Firewall Mini-HOWTO version 1.2.0 Linux Bridge+Firewall Mini-HOWTO version 1.2.0 Peter Breuer ( [e-mail])v, 19 December 19971. Introduction2. What and Why (and How?)2.1 What2.2 Why2.3 How?3. BRIDGING3.1 Software3.2 Prior Reading.3.3 Boot configuration3.4 Kernel configuration3.5 Network addresses3.6 Network routing3.7 Card configuration3.8 Additional routing3.9 Bridge Configuration3.10 Try it out3.11 Checks4. FIREWALLING4.1 Software and reading4.2 Preliminary checks4.3 Default rule4.4 Holes per address4.5 Holes per protocol4.6 Checks n