Maximum security for "Home" network sharing

Hi, recently I got a message from Windows Media Player stated that it found unknown devices with an MAC address given and asked for permission to perform media sharing. I was so shocked and realized that my Comodo Firewall is not configured to block any sharing within “Home” network. I couldn’t find any configuration from CF so I configured with Network And Sharing Center of Windows. It did allow me to turn off media sharing and password protected sharing but it doesn’t allow me to turn off File Sharing because it stated when File Sharing is turned off, Windows Firewall will be enabled. I do not want this happen cause I know it will have conflict with Comodo Firewall later. So may I know how to block all sharing within “Home” network or LAN? Thank You.