I need to be able to block an external ip address from accessing anything on Isa. It is currently trying to authenticate via active-sync causing that user account to be locked out. I added an access rule, set the "from" to that external ip address, set the "to" to "localhost". Applied it to "all users". I tried setting the "to" to the "external", but that didn't work. The only thing that appeared to be working was when I set the "to" to "localhost". I did notice I was still able to get to the Isa form to try and login, but I was not able to login to Owa during my testing. I thought it was working, but apparently not.
We are still getting lockouts from that say external ip address, so apparently the rule is not working.
Is there any easy way to completely block the external ip address in Isa?
Network Touch