How to Disable Ad Hoc Wireless Connections on Vista

Windows Vista won’t automatically create ad hoc wireless connections with other computers, but for greater security you may want to disable ad-hoc wireless connections entirely. You can do this by running the following Netsh command at an elevated command prompt:

netsh wlan add filter permission=denyall networktype=adhoc

To re-enable ad hoc wireless connections, run this command:

netsh wlan del filter permission=denyall networktype=adhoc

For more information on networking in Windows Vista and Windows Server 2008, see the Windows Server 2008 Networking and Network Access Protection (NAP) from Microsoft Press.