cacus@cacus:~$ lsmod | grep ip
ipt_TCPMSS              5376  1 
ip_nat_irc              3840  0 
ip_nat_ftp              4736  0 
iptable_nat             8964  1 
iptable_mangle          3968  0 
ipt_LOG                 8320  8 
ipt_MASQUERADE          4864  1 
ip_nat                 19884  4 ip_nat_irc,ip_nat_ftp,iptable_nat,ipt_MASQUERADE
ipt_TOS                 3456  0 
ipt_REJECT              6784  1 
ip_conntrack_irc        7920  1 ip_nat_irc
ip_conntrack_ftp        8816  1 ip_nat_ftp
ip_conntrack           53216  8 ip_nat_irc,ip_nat_ftp,iptable_nat,ipt_MASQUERADE,ip_nat,ip_conntrack_irc,ip_conntrack_ftp,xt_state
nfnetlink               8216  2 ip_nat,ip_conntrack
iptable_filter          4224  1 
ip_tables              15204  3 iptable_nat,iptable_mangle,iptable_filter
x_tables               16132  10 ipt_TCPMSS,xt_limit,xt_tcpudp,iptable_nat,ipt_LOG,ipt_MASQUERADE,ipt_TOS,ipt_REJECT,xt_state,ip_tables