I once stumbled upon the free version of Look N Stop. Its a much older version and only does inbound protection. Unfortunately, that website can't be remembered.
Look n Stop Lite 1.04 unofficial site - http://www.spychecker.com/program/looknstop.html I wouldn't use that old version, I rather use built-in Windows Firewall instead of this old package.
In that case, I might look for an alternative to Look N Stop. But it would be hard to decide since LnS has such strong inbound protection.
