The Network Address Translation (NAT) Table

The Network Address Translation table. This article explains the NAT table and its functionality within a router,firewall and server. Understand how the NAT table works, the different NAT modes available and how these can be used to provide increased security for your network, but also expose it if used incorrectly.

http://www.firewall.cx/networking-topics/network-address-translation-nat/228-nat-table.html