Differnece between "IP Security Policy" and connection security rules?

Robbo777

What is the difference between the "IP Security Policy" and the connection security rules under the firewall option in a GPO? I switched the security policy option to always require security. It seem to require security from every Internet page I went on.

If that's the case aren't the IP security policy and connection security rules pretty much two sides of the same coin and do the same thing?
It's a bit confusing

Cheers