Is there a way to block incoming XP RDP connections? We have some users who connect from home or elsewhere to PCs running HVAC controls in the off hours rather than drive in to see what the issue is. Most do have a post-XP OS but I want to keep XP out. I know I can set NLA authentication but that still allows XP SP3 in.
Any other way to do this? They don't always connect from the same PC so an IP filter would not work. I have done some reading on NAP, but that does not look so simple to implement.