Hi. Could someone help me or give me advice regarding NAT on a FTP server located in my DMZ. This is my setup : My Firewall(Linux 2.4.22-1) : | - eth0 = Public Interface (x.x.x.66 / 26 ) | - eth1 = DMZ Interface (172.16.100.254 / 24 ) | - eth2 = My Internal Network ( 192.168.1.1 / 24 ) I have a FTP server located on my DMZ Network. The server is listening on a ?non-standard? ftp port. It listens on port : 2121. To generate my firewall config I use FwBuilder. I?ve tried many configurations but, I never get the data port to open( e.g. to list a directory) In my configuration I?ve allowed, and NAT?ed the following services to my FTP server located on the DMZ : FTP = TCP Destination Port : Start : 2121 ? End : 2121 FTP_DATA = TCP Source Port : Start : 20 ? End : 20 Destination : Start : 1024 ? End : 65535 I can connect, but cannot list the directories. p.s. I?m running Proftpd on my FTP server. I have also tried to configure the ?PassivePorts= 60000 65534? to configure a group of the passive ports. But it?s the same issue with the directory listening. Any help would be much appreciated. Best regards to all, Svavar O Reykjavik - Iceland
