Whats the difference between RDR, MAP, and BIMAP?
In short: Rdr rewrites destination addresses and ports of packets entering an interface. Map rewrites source addresses and ports of packets leaving an interface. Bimap does both. In long: First and foremost: You probably do not need bimap. Try rdr first. Rdr is generally used to allow internet hosts to access servers behind the machine running IPF. As an example, apache could be running on a server behind the IPF machine, and http requests to the external ip address of the ipf machine can be redirected to that apache server. Map is generally used for NAT’ing (masquerading) clients behind the machine running IPF, thus you can have many clients accessing the internet via a single IP address. Bimap is generall used when you’re NAT’ing all outbound traffic to some address range (could be one address), and you have an server that needs to be accessed via a another address, and ALSO has to be able to make outgoing connections (like a passive FTP server) using that same address. Warning: Usin
