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, or ICMP-based traces, AS number lookups through several reliable sources, loose source routing, netblock name lookups, and more. LFT also distinguishes between layer-4 protocols, which make its statistics slightly more realistic, and gives a savvy user the ability to trace protocol routes, not just layer-3 hops.
|Tags||Systems Administration Networking Monitoring Firewalls|
|Licenses||Freeware Open Software|
|Operating Systems||POSIX Linux BSD Mac OS X Solaris|
Release Notes: Support was added for several common network encapsulations, including popular Linux cooked capture and PPP for compatibility with mobile broadband cards.
Release Notes: This release improves compatibility on more platforms and versions such as Solaris and Mac OS X or Darwin.
Release Notes: Many minor improvements, including a significant security fix on Mac OS X.
Release Notes: WhoB default behavior was changed due to popular demand. New configure options were added to perform universal builds and to force gettimeofday calls instead of relying on possibly low-precision packet header times on some platforms. The build process was improved on NetBSD and Darwin/Mac OS X.
Release Notes: Improved TCP and UDP traces. A new ICMP tracing method, including RFC1393 capabilities. A new TCP Basic trace method that works in NAT'd environments. Library improvements to call LFT functions from within your programs. Now builds on Windows. Many bugfixes.