Thanxs for your help, I've dig into the /var/log/messages and found this message everytime i tried to connect to the ftp server(it the same as the firewall) Oct 27 16:22:41 bob kernel: ipt_unclean: TCP option 8 after end Did this: tcpdump dst port ftp 16:22:41.317744 213.22.184.162.1844 > bob.liber4e.com.ftp: S 2900698949:2900698949(0) win 5840 <mss 1460,eol> (DF) 16:22:44.316286 213.22.184.162.1844 > bob.liber4e.com.ftp: S 2900698949:2900698949(0) win 5840 <mss 1460,eol> (DF) 16:22:50.301330 213.22.184.162.1844 > bob.liber4e.com.ftp: S 2900698949:2900698949(0) win 5840 <mss 1460,eol> (DF) 16:23:02.313601 213.22.184.162.1844 > bob.liber4e.com.ftp: S 2900698949:2900698949(0) win 5840 <mss 1460,eol> (DF) But i dont understand nothing of this, do u? I've found the UN_CLEAN chain from the iptables script and commented it and now ftp works :-) # Block (inbound) Traffic w/ Incorrect Flags #$IPT -N IN_UNCLEAN #$IPT -t filter -I INPUT -i $IF -m unclean -j IN_UNCLEAN #$IPT -t filter -I IN_UNCLEAN -j LOG --log-prefix "** UNCLEAN ** " #$IPT -t filter -I IN_UNCLEAN -j UNCLEAN But i dont figured out what was happenning.... /var/log/messages also shoes this: Oct 27 16:24:00 bob kernel: device eth0 entered promiscuous mode Oct 27 16:24:26 bob kernel: device eth0 left promiscuous mode Any clues on what happened? -- Best Regards, Jose' Nuno Neto TLM: 00 351 96 2808587
