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Tcpdump allows you to dump the traffic on a network. It can be used to print out the headers of packets on a network interface that matches a given expression. You can use this tool to track down network problems, to detect "ping attacks" or to monitor the network activities.


User manpage available in HTML format from


Download version 3.7.2 (stable)
released on 27 February 2003

VCS Checkout

password: anoncvs co tcpdump


Related Projects


LicenseVerified byVerified onNotes
BSD 3ClauseJanet Casey27 August 2003

Leaders and contributors

The Tcpdump Group Maintainer
See the CREDITS file in the distribution for a complete list Contributor

Resources and communication

Audience Resource type URI
Developer VCS Repository Webview
Developer,Support E-mail

Software prerequisites

Kind Description
Required to use libpcap

This entry (in part or in whole) was last reviewed on 1 July 2004.


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The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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