NAME¶

netstat-nat - Show the natted connections on a linux iptable firewall

SYNOPSIS¶

netstat-nat [options]

DESCRIPTION¶

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.

OPTIONS¶

-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

FILES¶

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

SEE ALSO¶

http://www.tweegy.nl/projects/netstat-nat/
http://www.netfilter.org/

AUTHOR¶

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