NAT, Network Address Translator

Description Glossary RFCs Publications Obsolete RFCs


Working groups: nat, Network Address Translators.

(RFC 2663) A method by which IP addresses are mapped from one realm to another, in an attempt to provide transparent routing to hosts. Traditionally, NAT devices are used to connect an isolated address realm with private unregistered addresses to an external realm with globally unique registered addresses.


NATP, Network Address and Port Translator.
A variant of NAT that can additionally translate address / port pairs.


[RFC 2663] IP Network Address Translator (NAT) Terminology and Considerations.

[RFC 2694] DNS extensions to Network Address Translators (DNS_ALG).

[RFC 2709] Security Model with Tunnel-mode IPsec for NAT Domains.

[RFC 2993] Architectural Implications of NAT.

[RFC 3022] Traditional IP Network Address Translator (Traditional NAT).

[RFC 3027] Protocol Complications with the IP Network Address Translator.

[RFC 3235] Network Address Translator (NAT)-Friendly Application Design Guidelines.

[RFC 3424] IAB Considerations for UNilateral Self-Address Fixing (UNSAF) Across Network Address Translation.

[RFC 3715] IPsec-Network Address Translation (NAT) Compatibility Requirements.

[RFC 3947] Negotiation of NAT-Traversal in the IKE.

[RFC 4008] Definitions of Managed Objects for Network Address Translators (NAT).

[RFC 5135] IP Multicast Requirements for a Network Address Translator (NAT) and a Network Address Port Translator (NAPT).

[RFC 5597] Network Address Translation (NAT) Behavioral Requirements for the Datagram Congestion Control Protocol.


Obsolete RFCs:

[RFC 1631] The IP Network Address Translator (NAT).

Description Glossary RFCs Publications Obsolete RFCs