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Simple port fwd. 1 interface

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http://www.unix.com – I have been tearing my hair out with this (and not enough left to keep going). I have a linux box (raspberry pi) single ethernet interface in a heavily filtered DMZ with external ports fwd'd that can access an internal IP's (different subnet). I want to forward the traffic. Should be simple I thought and in fact I have it working using 'nc' as a 'one hit' as follows Code: mkfifo backpipe nc -l 80  0<backpipe | nc 172.16.100.102 80 1>backpipe But I need this to be a permanent fwd. So after much googling tried to set up iptables to do this. IP of pi is 192.168.1.8 it has an e (HowTos)