ICMP: Difference between revisions
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[[File:Traceroute.png|none]] |
[[File:Traceroute.png|none]] |
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*Works by sequentially incrementing the TTL of UDP |
*Works by sequentially incrementing the TTL of UDP packets in Linux/Unix. |
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*Sending ICMP packets in Linux requires raw sockets and thus needs root privileges. |
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*It uses ICMP on Windows. |
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*All hops return a "TTL exceeded in transit" message |
*All hops return a "TTL exceeded in transit" message |
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*Last hop should return a "destination unreachable/port unreachable" message |
*Last hop should return a "destination unreachable/port unreachable" message |
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