We are still running ACS v18.104.22.168.6/7 in several infrastructures mixed with 1111s, 1112s and 1113s. I know, we are out of support. We have some of our upgrades in hand and will be starting soon. We have almost 40 of these appliances in 5 different infrastructures around the world so we have a lot of work to do . Until then, we are dealing with a nagging problem and wondered if there was an explanation or solution. Unfortunately the infrastructure that sees this problem the most cannot be upgraded just yet.
Periodically, the key in a client entry changes, causing authentication failures. Because we have many AAA clients that include possibly 100s of IPs, the failures can be widespread. The key almost always changes to this:
From testing, it appears that one cause is using Firefox when making edits. We know that browser is not supported so we are not using it. I suspected IE8 was causing it too, but I have been unsuccessful in proving that. Those of us making edits are using IE6.
Does anyone know what could be causing this?