I have read that there are many types of NATs available like symmetric NAT, full-cone NAT, etc. If I am behind a NAT, is there any way to find out the type of NAT behind which I am currently working on?
I setup my own Ubuntu desktop as a NAT machine using the basic iptables rules and by adding one more NIC card. I used the following rules:
$ iptables -t nat -A POSTROUTING --out-interface eth0 -j MASQUERADE $ iptables -t filter -A FORWARD --in-interface eth1 -j ACCEPT
Is there any way I can see my NAT table?