These used to be available at fireverse.org but after about 20 minutes of searching on their site I can't seem to find them. Attached is a copy of the stencils I had downloaded from them at some point, not sure how old these are. If someone can figure out where these are located on fireverse's site I'll be more than happy to link them and remove the copy I have attached to this message.
Edit 7/6/2016: Removed attached file of fireverse's original Visio stencils in deference to the "official" stencils provided below.
My book "Max Power: Check Point Firewall Performance Optimization"
now available via http://maxpowerfirewalls.com.
Updated 2023 IPS/AV/ABOT R81.20 Course now
available at maxpowerfirewalls.com