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Traceroute Program

Traceroute Program. Introduction - Problem. Wich route do my packets follow towards my destination?. Traceroute used packets. Traceroute program uses : UDP packet destination port > 30000 small TTL ICMP time exceeded ICMP port unreachable error. traceroute 131.107.7.29. TTL=0. TTL=0.

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Traceroute Program

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  1. Traceroute Program

  2. Introduction - Problem • Wich route do my packets follow towards my destination?

  3. Traceroute used packets • Traceroute program uses : • UDP packet • destination port > 30000 • small TTL • ICMP time exceeded • ICMP port unreachable error

  4. traceroute 131.107.7.29 TTL=0 TTL=0 UDP, port 33123, TTL=3 UDP, port 33123, TTL=2 UDP, port 33123, TTL=1 ICMP Port Unreachable Traceroute 131.107.7.29 IP Address = 131.108.7.29

  5. Command Usage: tracert [-d] [-h maximum_hops] [-j host-list] [-w timeout] target_name Options: -d Do not resolve addresses to hostnames. -h maximum_hops Maximum number of hops to search for target. -j host-list Loose source route along host-list. -w timeout Wait timeout milliseconds for each reply.

  6. Exercise: Find out about the Traceroute options

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