Bro is a powerful network analysis framework that is much different from the typical IDS you may know. Official mirror of .
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Latest commit 57b3e21 Nov 21, 2017 @jsiwek jsiwek Merge remote-tracking branch 'origin/topic/robin/event-args'
* origin/topic/robin/event-args:
  Fix assignments to event arguments becoming visible to subsequent handlers.


Bro Network Security Monitor

Bro is a powerful framework for network analysis and security monitoring. Please see the INSTALL file for installation instructions and pointers for getting started. NEWS contains release notes for the current version, and CHANGES has the complete history of changes. Please see COPYING for licensing information.

You can download source and binary releases on:

To get the current development version, clone our master git repository:

git clone --recursive git://

For more documentation, research publications, and community contact information, please see Bro's home page:

On behalf of the Bro Development Team,

Vern Paxson & Robin Sommer, International Computer Science Institute & Lawrence Berkeley National Laboratory /