iftop

Iftop is a free software command-line system monitor tool developed by Paul Warren. It produces a frequently updated list of network connections.[2] By default, the connections are ordered by bandwidth usage, with only the "top" bandwidth consumers shown. It is analogous to top, but instead of system-wide resource monitoring, it focuses on displaying network usage and statistics.

iftop
Developer(s)Paul Warren
Initial releaseMarch 2, 2002 (2002-03-02)[1]
Stable release
0.17
Repositoryhttps://code.blinkace.com/pdw/iftop
Written inC
Operating systemUnix-like
TypeBandwidth usage / System monitor
LicenseGNU General Public License
Websitewww.ex-parrot.com/pdw/iftop/

Description

iftop monitors network traffic and displays a table of current bandwidth usage. An interface may be specified' if not, it will listen on the first interface it finds that appears to be external (with libpcap and libncurses). iftop must be run with sufficient permissions to monitor all network traffic: on most systems this means that it must be run as a root user using the sudo command.

By default, iftop will look up hostnames associated with addresses and counts all IP packets that pass through the filter. Hostname lookup can add traffic in and of itself, and may result in an inaccurate display of network traffic.

A feature of iftop is that it can suppress display of DNS traffic by using a filter code such as "not port domain", or switch it off entirely, by using the -n option or by pressing "n" when the program is running. Using the -F option makes it possible to show packets entering and leaving a given network.

See also

References
  1. https://code.blinkace.com/pdw/iftop/raw/master/ChangeLog
  2. "Topnet: A Network-Aware top(1)".
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.