hearnet - listen to your network

Requirements:
- libpcap
- libjack

Synopsis:
    make
    sudo make suid
    # start jack if necessary
    ./hearnet

Details:

hearnet now drops priveleges when run with the suid bit set, which means
you can hook it into your regular non-root jackd, and run it as a normal
user. 

You can specify a filter expression (a la tcpdump), e.g.:

    ./hearnet eth0 udp port 53

Very nice for listening to just one kind of traffic. Try this for an
accompaniment to your VOIP conversation:

    ./hearnet eth0 udp port sip

License:
    
    Copyright (C) 2003-2006  Hans Fugal <hans@fugal.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.