References

For more information about NAT, consult the following resources:

RFC 2663-IP Network Address Translator (NAT) Terminology and Considerations (August 1999)
RFC 2694-DNS extensions to Network Address Translators (DNS_ALG) (September 1999)
RFC 2993-Architecture Implications of NAT (November 2000)
RFC 3022-Traditional IP Network Address Translator (Traditional NAT) (January 2001)
RFC 3027-Protocol Complications with the IP Network Address Translator (January 2001)