[Bro] Surprising behavior when reading packets from file vs interface.

Robin Sommer robin at icir.org
Fri Sep 24 11:09:20 PDT 2010

On Thu, Sep 23, 2010 at 15:28 -0700, you wrote:

> Running 'bro -r' with a tracefile, however, causes bro to not bind to
> the broccoli port, thus not communicating with the app - verified
> w/netstat.

This is actually intentional (because the timing can't be kept in
sync between the trace and the (real-time) communication), and
pseudo-realtime is indeed the recommended solution. 

> However, I'm not sure this behavior is optimal - there are a number of
> bro applications now that may not need to listen to an interface (or
> to a file, for that matter), but are strictly broccoli event driven,

That's right, but when Bro is started without -r, it should actually
work as you'd expect. Communication is only disabled when you give
Bro a trace to read from . Are you seeing something different?


Robin Sommer * Phone +1 (510) 722-6541 * robin at icir.org 
ICSI/LBNL    * Fax   +1 (510) 666-2956 *   www.icir.org

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