ICMP: Difference between revisions

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*Works by sequentially incrementing the TTL of UDP (orpackets ICMPin on Windows) packetsLinux/Unix.
*Sending ICMP packets in Linux requires raw sockets and thus needs root privileges.
*It uses ICMP on Windows.
*All hops return a "TTL exceeded in transit" message
*Last hop should return a "destination unreachable/port unreachable" message