Setting the security level for a Zone

Security levels make it easy to configure your firewall settings. You can apply a preconfigured security level (High, Medium, or Off) to each Zone, or you can specify the port and protocol restrictions for each level. See Blocking and unblocking ports .

To set the security level for a Zone:

Select Firewall.
In the Internet Zone Security area, click the slider and drag it to the desired setting.

High	Your computer is in stealth mode, making it invisible to other computers. Access to Windows NetBIOS (Network Basic Input/Output System) services, file and printer shares is blocked. Ports are blocked unless you have provided permission for a program to use them.
Med	Your computer is visible to other computers. Access to Windows services, file and printer shares is allowed. Program permissions are still enforced.
Off	Your computer is visible to other computers. Access to Windows services, file and printer shares is allowed. Program permissions are still enforced.

In the Trusted Zone Security area, click the slider and drag it to the desired area.

High	Your computer is in stealth mode, making it invisible to other computers. Access to Windows (NetBIOS) services, file and printer shares is blocked. Ports are blocked unless you have provided permission for a program to use them.
Med	Your computer is visible to other computers. Access to Windows services, file and printer shares is allowed. Program permissions are still enforced.
Off	Your computer is visible to other computers. Access to Windows services, file and printer shares is allowed. Program permissions are still enforced.