Dell Latitude XT PP12S User Manual page 110

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
•
Firewall.
In Windows XP, click Start → Control Panel→ Security Center→
•
Windows Firewall.
NOTE:
software.
For more information, see "Windows Help and Support" on page 19.
110
Setting Up and Using Networks
Enabling Windows Firewall does not reduce the need for virus-checking
→ Control Panel→ Security→ Windows