install5:/lib/modules/2.6.22/kernel/net/netfilter# lsmod | grep ipt
iptable_filter          2880  1
ip_tables              12196  1 iptable_filter
install5:/lib/modules/2.6.22/kernel/net/netfilter# lsmod | grep nf_
nf_conntrack           50708  2 xt_conntrack,xt_state
install5:/lib/modules/2.6.22/kernel/net/netfilter# lsmod | grep xt_
xt_conntrack            2752  0
xt_tcpudp               3040  3
xt_state                2400  0
nf_conntrack           50708  2 xt_conntrack,xt_state
x_tables               14276  4 xt_conntrack,xt_tcpudp,xt_state,ip_tables
install5:/lib/modules/2.6.22/kernel/net/netfilter#