Satish,
CLI needs VnmShd(.exe) running in order to connect and run the CLI commands. When you first enter the "connect" command, it checks to see if here is a VnmShd(.exe) running. If not, it will start one. So, if there is no VnmShd(.exe) currently running and you remove, rename or change the permissions so it cannot run, then users will not be able to connect via CLI.
Regards,
Joe