https://app.knowbase.one/vault/rfc/docid/6305
RFC5780: NAT Behavior Discovery Using Session Traversal Utilities for NAT (STUN)
Internet Engineering Task Force (IETF) D. MacDonald Request for Comments: 5780 B. Lowekamp Category: Experimental Skype ISSN: 2070-1721 May 2010 ...
https://app.knowbase.one/vault/rfc/docid/8532
RFC7857: Updates to Network Address Translation (NAT) Behavioral Requirements
Internet Engineering Task Force (IETF) R. Penno Request for Comments: 7857 Cisco BCP: 127 S. Perreault Updates: 4787, 5382, 5508 Jive Communications Ca...