---
name: "netstat-nat"
section: "1"
platform: "linux"
package: "netstat-nat"
version: "1.4.10-6"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/netstat-nat"
---

# netstat-nat(1)

Show the natted connections on a linux iptable firewall

## 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