GPO Firewall edit

I was curious if anyone has had any experience editing firewall rules through group policy, specifically block IP rules.

Scenario: I have a large text file full of IPs I would like to block in my AD environment. I would not like to go through and add all the items in the txt file manually, I would like to use the power of powershell to do so.

not sure what you are asking for

The current GPO cmdlets don’t allow you to modify GPO settings. The only way I know of doing that is the commercial SDM software offering -