Cut Through Authentication on the ASA
Cut-Through Authentication proxy on the ASA is an excellent way to track and authorize users when they access resources on the network that you may not want them to access to originally. I have used it to track user activities, authorize users to different network devices from time to time that they really should not be accessing whenever they feel, and to provide a user a way to override the firewall policies that have been defined for a given subnet. In other words, it is a very useful function and I believe it’s function is vital for users as well as the network administrator. Just so you know, this feature is just like the Auth-Proxy or Network Admission technologies on an IOS router.
Here is the topology we will be working with. I have setup a PC so we can simulate a typical user experience.
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