nntp@tumba:~$ sudo iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:ssh
ACCEPT     all  --  10.1.1.0/24          anywhere
ACCEPT     icmp --  10.1.1.0/24          anywhere             icmp echo-request

Chain FORWARD (policy DROP)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     tcp  --  tumba                anywhere             tcp dpts:6881:6999
ACCEPT     tcp  --  10.1.1.0/24          anywhere             multiport dports ftp,ssh,domain,http,pop3,https,msnp,4000,5228,ircd,6881,7070,8001,8333
ACCEPT     udp  --  10.1.1.0/24          anywhere             multiport dports fsp,ssh,domain,http,pop3,https,msnp,4000,5228,6667,6881,7070,8001,8333
ACCEPT     udp  --  anywhere             anywhere             multiport dports 6881:6999
ACCEPT     tcp  --  anywhere             anywhere             multiport dports 6881:6999
ACCEPT     tcp  --  anywhere             10.0.0.1             multiport dports 6881:6999

Chain OUTPUT (policy DROP)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere             multiport dports ftp-data,ftp,ssh,domain,http,netbios-ns,netbios-dgm,netbios-ssn,https,microsoft-ds,4000,mdns,6881,8333
ACCEPT     udp  --  anywhere             anywhere             multiport dports ssh,domain,http,netbios-ns,netbios-dgm,netbios-ssn,433,microsoft-ds,6881
ACCEPT     udp  --  anywhere             anywhere             multiport dports 6881:6999
ACCEPT     tcp  --  anywhere             anywhere             multiport dports 6881:6999
ACCEPT     icmp --  anywhere             anywhere             icmp echo-request
ACCEPT     all  --  10.1.1.0/24          anywhere