====== Ubuntu - Firewall - List the natted/routed connections on a Linux iptables firewall ======

You need to use **netstat -nat** command.  You can also use **/proc/net/ip_conntrack** or **/proc/net/nf_conntrack**, which is the temporary conntrack storage of netfilter.

<code bash>
netstat -nat -l
</code>

or

<code bash>
cat /proc/net/ip_conntrack
</code>