Layer Four Traceroute

Layer Four Traceroute Publisher's Description:
LFT (Layer Four Traceroute) is a sort of "traceroute" that often works much faster than the commonly-used Van Jacobson method and goes through many configurations of packet-filter based firewalls. More importantly, LFT implements numerous other features, including TCP, UDP, and ICMP trace methods, AS number lookups through several reliable sources, loose source routing, netblock name lookups, and more. LFT also distinguishes between TCP-based protocols, which make its statistics slightly more realistic, and gives a savvy user the ability to trace protocol routes, not just layer-3 hops. Also includes WhoB, a whois client designed specifically for network engineers.

What's new in this version:

Improved build process on NetBSD and Darwin/Mac OS X. Some code clean-up and features added to configuration system. New configure options to use gettimeofday calls instead of relying on imprecise timing in packet headers on some platforms. Default behavior of WhoB client changed due to popular demand.