Bro is automatically started at boot time via the bro.rc script, ( located in /usr/local/bro/etc and /usr/local/etc/rc.d on FreeBSD or /usr/init.d on Linux ) To run this script by hand, type:
bro.rc start
or
bro.rc checkpoint
or
bro.rc stop
Use checkpoint
to restart Bro, loading a new policy file.