1 8 Traceroute Program. 2 8 Introduction - Problem Wich route do my packets follow towards my...
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Transcript of 1 8 Traceroute Program. 2 8 Introduction - Problem Wich route do my packets follow towards my...
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Traceroute Program
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Introduction - Problem
Wich route do my packets follow towards my destination?
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Traceroute used packets
Traceroute program uses :
UDP packet destination port > 30000
small TTL
ICMP time exceeded
ICMP port unreachable error
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Traceroute 131.107.7.29
IP Address = 131.108.7.29
ICMP Port Unreachable
traceroute 131.107.7.29traceroute 131.107.7.29
UDP, port 33123, TTL=3UDP, port 33123, TTL=2UDP, port 33123, TTL=1
TTL=0TTL=0TTL=0TTL=0
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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.
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Exercise: Find out about the Traceroute options