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author | Jeroen Roovers <jer@gentoo.org> | 2018-04-20 15:08:29 +0200 |
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committer | Jeroen Roovers <jer@gentoo.org> | 2018-04-20 15:09:10 +0200 |
commit | a606b7134e3f8743b8236ecac463491549f9e895 (patch) | |
tree | 49dc3d1ab08351c50d547fc86a4b8f66b38b6921 /net-analyzer | |
parent | app-admin/filebeat: drop old (diff) | |
download | gentoo-a606b7134e3f8743b8236ecac463491549f9e895.tar.gz gentoo-a606b7134e3f8743b8236ecac463491549f9e895.tar.bz2 gentoo-a606b7134e3f8743b8236ecac463491549f9e895.zip |
net-analyzer/lft: Add <longdescription />.
Package-Manager: Portage-2.3.31, Repoman-2.3.9
Diffstat (limited to 'net-analyzer')
-rw-r--r-- | net-analyzer/lft/metadata.xml | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/net-analyzer/lft/metadata.xml b/net-analyzer/lft/metadata.xml index 74c2baebb4ec..2fd58454386f 100644 --- a/net-analyzer/lft/metadata.xml +++ b/net-analyzer/lft/metadata.xml @@ -2,7 +2,47 @@ <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> <pkgmetadata> <maintainer type="project"> - <email>netmon@gentoo.org</email> - <name>Gentoo network monitoring and analysis project</name> +<email>netmon@gentoo.org</email> +<name>Gentoo network monitoring and analysis project</name> </maintainer> +<longdescription> +(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. +</longdescription> </pkgmetadata> |