Configuring Your Browser to Use Your CAC/Browser Won't prompt to Select Cert

First install DoD Certs Link

Here is how to use Firefox Link

Here is how to use IE Link 1 or  Link 2

Macs Link

If your getting this error "403 Access Forbidden - You do not have Permission to Access this resource."

They also explain that here. Go to question 9

MilitaryCAC is a great source for CAC stuff in general!