Network Address Translation Overview   
▄ Cisco ASR 5000 Series Product Overview 
Supported Standards 
The NAT feature supports the following RFCs: 
 
 
  RFC 1631: The IP Network Address Translator (NAT); May 1994 
  RFC 1918: Address Allocation for Private Internets; February 1996 
  RFC 2663: IP Network Address Translator (NAT) Terminology and Considerations; August 1999 
  RFC 3022: Traditional IP Network Address Translator (Traditional NAT); January 2001 
  RFC 3027: Protocol Complications with the IP Network Address Translator; January 2001 
  RFC 4787: Network Address Translation (NAT) Behavioral Requirements for Unicast UDP; January 2007 
  RFC 4966: Reasons to Move the Network Address Translator - Protocol Translator (NAT-PT) to Historic Status; 
July 2007 
  RFC draft-nishitani-cgn-00.txt: Carrier Grade Network Address Translator (NAT) Behavioral Requirements for 
Unicast UDP, TCP and ICMP; July 2, 2008