When Windows Firewall is enabled for a network connection, the Firewall icon appears with a red background in the Network Connections section of the Control Panel.
To access options for enabling Windows Firewall:
•In Windows Vista, click Start 
→ Control Panel→ Security→ Windows Firewall.
•In Windows XP, click Start → Control Panel→ Security Center→ Windows Firewall.
NOTE: Enabling Windows Firewall does not reduce the need for
For more information, see "Windows Help and Support" on page 19.
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Setting Up and Using Networks
