mudinfo.net

I have no way to monitor or police IP connections.
Currently I am just watching them manually via the server console.

I know other BBSes have ways to enforce this.
It would be really lovely if anyone could help me out.

I've tried control 4, but that messes up keys.
I've tried control 5, but the .dll crashes.

Anyone? =/

5 works on XP-based systems or Windows 2000. If you're home-hosting your BBS, you can roll back to windows XP for the server machine and 5 will work flawlessly. Otherwise, like the rest of us hosting from data centers using Server 2008/2012, your SOL.