Limiting access based on number of AuthUsers

[Jeremy Wilson]

I figure someone, somewhere has done this already, so I thought I might ask
here.

What I need to do is limit the number of times a user can connect to the
webserver.  Basically, if user x is authenticated from more than y number
of IPs within z minutes, I want the authentication to be declined.

Does such a module already exist?

Thanks for any help...