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layer-four traceroute


lft sends various TCP SYN and FIN probes (differing from Van Jacobson's UDP-based method) utilizing the IP protocol "time to live" field and attempts to elicit an ICMP TIME_EXCEEDED response from each gateway along the path to some host. lft also listens for various TCP and ICMP messages along the way to assist network managers in ascertaining per-protocol heuristic routing information and can optionally retrieve various information about the networks it traverses.

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72 other people were interested in this package here. The newest known version of this software is 2.2-4ubuntu1 (Information last updated about 4 hours ago.)