I want to protect our network with a firewall that should run on a SuSE machine (kernel 2.2 stable).
There is a router that provides a permantent DSL connection to the net. Normaly this router is the gateway for all machines on the local net - but not I want to put a firewall between.
The network has official ip addresses and all machines shall use these, which means that I do not want to have masquerading. This is a bit difficult, because you have the same subnet on both sides of the linux box. It is much easier, to get a single official IP for the firewall, and a subnet behind the firewall (also official). If you can't get new ip adresses, you may need to do ethernet-bridging and firewalling, maybe there is a howto?
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