Summary
(Note that version 3.80 is really 3.8, but released after 3.79.) LFT, short for 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-filters (firewalls). More importantly, LFT implements numerous other features including AS number lookups through several reliable sources, loose source routing, netblock name lookups, et al. What makes LFT unique? LFT is the all-in-one traceroute tool because it can launch a variety of different probes using ICMP, UDP, and TCP protocols, or the RFC1393 trace method. For example, rather than only launching UDP probes in an attempt to elicit ICMP "TTL exceeded" from hosts in the path, LFT can send TCP SYN or FIN probes to target arbitrary services. Then, LFT listens for "TTL exceeded" messages, TCP RST (reset), and various other interesting heuristics from firewalls or other gateways in the path. LFT also distinguishes between TCP-based protocols (source and destination), which make its statistics slightly more realistic, and gives a savvy user the ability to trace protocol routes, not just layer-3 (IP) hops. With LFT's verbose output, much can be discovered about a target network. WhoB is a likable whois client (see whois(1)) designed to provide everything a network engineer needs to know about a routed IP address by typing one line and reading one line. But even so, it's worth typing a few more lines because WhoB can do lots of other cool things for you! It can display the origin-ASN based on the global routing table at that time (according to Prefix WhoIs, RIPE NCC, or Cymru), the 'origin' ASN registered in the RADB (IRR), the netname and orgname, etc. By querying pWhoIs, WhoB can even show you all prefixes being announced by a specific Origin-ASN. WhoB performs the lookups quickly, the output is easily parsed by automated programs, and it's included as part of the Layer Four Traceroute (LFT) software package. LFT uses WhoB as a framework (and you can too, quite easily--see whois.h). Recent LFT releases (as of version 2.5) include WhoB functionality through a standalone "whob" client/command placed in the LFT binary directory. LFT and WhoB continue to evolve and provide more and more useful data to network engineers and to anyone else that cares how IP datagrams are being routed. With the advent of smarter firewalls, traffic engineering, QoS, and per-protocol packet forwarding, LFT and WhoB have become invaluable tools for many network managers worldwide.
Versions
v3.91-r1 :: 0 :: gentoo
- Modified
- License
- VOSTROM
- Keywords
- amd64 ppc x86 ~amd64-linux ~ppc-macos ~x86-linux
Dependencies
net-libs / libpcap : A system-independent library for user-level network packet capture
Runtime Dependencies
net-libs / libpcap : A system-independent library for user-level network packet capture
Bugs
Change logs
- Repository mirror & CI · gentoo
Merge updates from master - Sam James · gentoo
net-analyzer/lft: drop 3.77, 3.79, 3.80, 3.90
Bug: https://bugs.gentoo.org/776541 Signed-off-by: Sam James <sam@gentoo.org> - Sam James · gentoo
net-analyzer/lft: Stabilize 3.91-r1 x86, #776541
Signed-off-by: Sam James <sam@gentoo.org> - Repository mirror & CI · gentoo
Merge updates from master - Sam James · gentoo
net-analyzer/lft: Stabilize 3.91-r1 amd64, #776541
Signed-off-by: Sam James <sam@gentoo.org> - Repository mirror & CI · gentoo
Merge updates from master - Sam James · gentoo
net-analyzer/lft: Stabilize 3.91-r1 ppc, #776541
Signed-off-by: Sam James <sam@gentoo.org> - Repository mirror & CI · gentoo
Merge updates from master - Jeroen Roovers · gentoo
net-analyzer/lft: Remove strip call Makefile.in
Package-Manager: Portage-2.3.103, Repoman-2.3.23 Closes: https://bugs.gentoo.org/731222 Signed-off-by: Jeroen Roovers <jer@gentoo.org> - Repository mirror & CI · gentoo
Merge updates from master - Jeroen Roovers · gentoo
net-analyzer/lft: Version 3.91
Package-Manager: Portage-2.3.99, Repoman-2.3.22 Signed-off-by: Jeroen Roovers <jer@gentoo.org> - Repository mirror & CI · gentoo
Merge updates from master - Jeroen Roovers · gentoo
net-analyzer/lft: EAPI=7, suppress some compiler warnings
Package-Manager: Portage-2.3.99, Repoman-2.3.22 Signed-off-by: Jeroen Roovers <jer@gentoo.org> - Jeroen Roovers · gentoo
net-analyzer/lft: Version 3.90
Package-Manager: Portage-2.3.99, Repoman-2.3.22 Signed-off-by: Jeroen Roovers <jer@gentoo.org> - Jeroen Roovers · gentoo
net-analyzer/lft: Old.
Package-Manager: Portage-2.3.28, Repoman-2.3.9 - Jeroen Roovers · gentoo
net-analyzer/lft: Version 3.80.
Package-Manager: Portage-2.3.28, Repoman-2.3.9 - Jeroen Roovers · gentoo
net-analyzer/lft: Version bump.
Package-Manager: Portage-2.3.5, Repoman-2.3.2 - Jeroen Roovers · gentoo
net-analyzer/lft: Version bump.
Package-Manager: Portage-2.3.5, Repoman-2.3.2 - Robin H. Johnson · gentoo
Drop $Id$ per council decision in bug #611234.
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> - Jeroen Roovers · gentoo
net-analyzer/lft: Old.
Package-Manager: Portage-2.3.3, Repoman-2.3.1 - T. Malfatti · gentoo
media-libs/portaudio: Version bump - Agostino Sarubbo · gentoo
net-analyzer/lft: ppc stable wrt bug #604598
Package-Manager: portage-2.3.0 RepoMan-Options: --include-arches="ppc" Signed-off-by: Agostino Sarubbo <ago@gentoo.org> - Agostino Sarubbo · gentoo
net-analyzer/lft: x86 stable wrt bug #604598
Package-Manager: portage-2.3.0 RepoMan-Options: --include-arches="x86" Signed-off-by: Agostino Sarubbo <ago@gentoo.org> - Agostino Sarubbo · gentoo
net-analyzer/lft: amd64 stable wrt bug #604598
Package-Manager: portage-2.3.0 RepoMan-Options: --include-arches="amd64" Signed-off-by: Agostino Sarubbo <ago@gentoo.org> - Jeroen Roovers · gentoo
net-analyzer/lft: Old.
Package-Manager: portage-2.3.2 - Jeroen Roovers · gentoo
net-analyzer/lft: Version bump.
Package-Manager: portage-2.3.2 - Agostino Sarubbo · gentoo
net-analyzer/lft: amd64 stable wrt bug #586860
Package-Manager: portage-2.2.28 RepoMan-Options: --include-arches="amd64" Signed-off-by: Agostino Sarubbo <ago@gentoo.org> - Jeroen Roovers · gentoo
net-analyzer/lft: Version bump.
Package-Manager: portage-2.3.0_rc1 - Jeroen Roovers · gentoo
net-analyzer/lft: Old.
Package-Manager: portage-2.3.0_rc1 - Jeroen Roovers · gentoo
net-analyzer/lft: Version bump.
Package-Manager: portage-2.3.0_rc1 - Jeroen Roovers · gentoo
net-analyzer/lft: Version bump.
Package-Manager: portage-2.2.28 - Justin Lecher · gentoo
Use https by default
Convert all URLs for sites supporting encrypted connections from http to https Signed-off-by: Justin Lecher <jlec@gentoo.org> - Robin H. Johnson · gentoo
proj/gentoo: Initial commit
This commit represents a new era for Gentoo: Storing the gentoo-x86 tree in Git, as converted from CVS. This commit is the start of the NEW history. Any historical data is intended to be grafted onto this point. Creation process: 1. Take final CVS checkout snapshot 2. Remove ALL ChangeLog* files 3. Transform all Manifests to thin 4. Remove empty Manifests 5. Convert all stale $Header$/$Id$ CVS keywords to non-expanded Git $Id$ 5.1. Do not touch files with -kb/-ko keyword flags. Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> X-Thanks: Alec Warner <antarus@gentoo.org> - did the GSoC 2006 migration tests X-Thanks: Robin H. Johnson <robbat2@gentoo.org> - infra guy, herding this project X-Thanks: Nguyen Thai Ngoc Duy <pclouds@gentoo.org> - Former Gentoo developer, wrote Git features for the migration X-Thanks: Brian Harring <ferringb@gentoo.org> - wrote much python to improve cvs2svn X-Thanks: Rich Freeman <rich0@gentoo.org> - validation scripts X-Thanks: Patrick Lauer <patrick@gentoo.org> - Gentoo dev, running new 2014 work in migration X-Thanks: Michał Górny <mgorny@gentoo.org> - scripts, QA, nagging X-Thanks: All of other Gentoo developers - many ideas and lots of paint on the bikeshed