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Feb 11, 2022 at 22:26 comment added Ron Trunk @AlokMaity because NAT devices really don’t fit into a OSI or TCP/IP model. The models never imagined NAT.
Feb 11, 2022 at 19:18 comment added S. M. when we use layer4 port number(TCP,UDP) in layer3 then how NAT router came to know of layer4 contents? It breaks ip datagram in layer3?
Apr 2, 2021 at 13:11 history answered Ron Trunk CC BY-SA 4.0