If the user has System or Admin privs, it shouldn't be a security issue. The command-line <kbd>kill</kbd> utility that comes with the Resource Kit can kill the services (you have to kill <kbd>inetinfo.exe</kbd> and <kbd>mtx.exe</kbd>).

Naturally one does not want to try running shell commands from a service (I was thinking of using Win32::Daemon).

Sometimes something crashes the inetnet service, so it does not respond to <kbd>net stop</kbd>... otherwise I'd not need to ask the question.