how does a NAT server forward ping ICMP echo reply packets to users

Posted by iamrohitbanga on Super User See other posts from Super User or by iamrohitbanga
Published on 2010-04-27T08:32:53Z Indexed on 2010/04/27 8:33 UTC
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ping

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ip-address

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nat

NAT uses IP address port number combination to hash the outgoing requests. Since ping requests consist of ICMP echo request packets they do not have any associated port number. How does a NAT server forward the replies to the hosts inside the network?

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