netstat-nat - Man Page

Show the natted connections on a linux iptable firewall

Synopsis

netstat-nat [options]

netstat-nat Displays NAT connections managed by netfilter/iptables which comes with the > 2.4.x linux kernels.

The program reads its information from '/proc/net/ip_conntrack' or '/proc/net/nf_conntrack', which is the temporary conntrack-storage of netfilter.

-h: displays help
-n: don't resolve IPs/portnumbers to host/portnames
-p <protocol>: display NAT connections with protocol selection (see /etc/protocols)
-s <source host>: display connections by source IP/hostname
-d <destination host>: display connections by destination IP/hostname
-S: display SNAT connections
-D: display DNAT connections
-L: display only connections to NAT box self (doesn't show SNAT & DNAT)
-R: display only connections routed through the NAT box (doesn't show SNAT & DNAT)
-x: extended view of hostnames
-r <src|dst|src-port|dst-port|state>: sort connections
-o: no output header
-N: display NAT box connection information (only valid with SNAT & DNAT)
-v: prints version

/proc/net/ip_conntrack or /proc/net/nf_conntrack

netstat-nat has been written by D.Wijsman danny@tweegy.nl
The manual page has been written by marceln@xs4all.nl

July 2002