DShieldBlocker v1.0

 This script cooperates with dshield.org reports and
 OpenBSD's Packet Filter (pf). It adds reported IP ranges 
 to the table and immediately blocks them.

 add this to your pf.conf:
 table <dshield> persist file "/data/sysop/fw/dshield"
 block in quick on $ext_if from <dshield> to any

 - Daniel Gerzo