At Wednesday, 31/10/2001 09:55 AM (+1100), Jean-Francois Dive wrote: >Hi all, > >i was wandering something with PAT: >If you have multiple boxes trying to access the same server on the internet, >going trough the same PAT router, so using the same external ip address: if >the sender stack does Path MTU discovery (most of the stack does now), and >if both hit a smaller MTU in the way, how does the NAT code knows where to >send back the ICMP on the inside of the PAT router .? I believe it does >work, but how ?
All PAT/NAT does is translates the private IP address to a public ip+port via a lookup table using the src and dst ip addresses/port numbers. Each session will have a different translation thus each path's MTU is retained. >JeF > > >-- >SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ >More Info: http://lists.slug.org.au/listinfo/slug -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
