NAT Technical Tips from Cisco
- This page provides tips directly from Cisco's Technical Assistance Center (TAC) engineers to help you with Network Address Translation (NAT) issues.
- http://www.cisco.com/en/US/tech/tk648/tk361/tk438/tsd_technology_support_sub-protocol_home.html

IP Masquerading (NAT) Using iptables
- Provides information about how IP masquerading (NAT) works.
- http://www.billauer.co.il/ipmasq-html.html

NAT and Peer-to-peer networking
- Dan Kegel's guide to writing peer-to-peer applications to work through NAT routers
- http://alumnus.caltech.edu/~dank/peer-nat.html

How Network Address Translation Works
- Illustrations and animations show how NAT allows a single device, such as a router, to act as an agent between the Internet (or "public network") and a local (or "private") network.
- http://www.howstuffworks.com/nat.htm