I was reading ftp-proxy code, more specially line 921 to 960 from ftp-proxy.c.
In my scenario, i read the add_nat,add_rdr, add_filter as the following structure: rdr from $client to $server port $proxy_port -> $server port $port nat from $client to $server port $port -> $proxy pass in from $client to $server port $port pass out from $proxy to $server port $port Since, each time a packet reaches the firewall, i was wondering about the reasons i saw the two filter rules but i could not figure it out. Thanks in advance.
