As you know, if you want to create a firewall policy in the TMG firewall, you need to tell what protocol it should use.
You always have the option of creating your own protocol, but why do that when the TMG firewall comes with a ton of built in protocols?
But what are they?
Here’s a great TechNet wiki article that provides a list of all the out of the box protocols:
DEBRA LITTLEJOHN SHINDER
MVP (Enterprise Security)