ICMP 3 / 3 if a port is unreachable


This Content is from SuperUser. Question asked by Bonita Montero

When I want to connect to a non-opened port of my Linux-PC from my Windows PC my IP-stack runs into a timeout after some seconds. So what’s happening here ? Does my Windows PC not evaluate any ICMP destination / port unreachable message (ICMP packet type 3 / 3) or are they not sent at all from my Linux-PC ?


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