PF Snort tutorial

[Bentley, Dain]

I've been looking around for a good tutorial on implementing snort with PF and
everything I see is old, does anyone know of or have implemented a solution
using an IDS/IPS with PF on the same box?  If possible I'd like snort of some
other IDS inspect packets and have pf drop them based on the fact they match
certain signatures.  Thanks in advance.