1 - Open the Start menu. click the Windows logo in the bottom-left corner of the screen or press the ⊞ Win key.
2 - Click Control Panel. You'll likely find this option on the right side of the Start window, though you may first need to click All Programs.
3 - Click Security. This option resembles a multicolored shield; it's on the left side of the window.
4 - Click Windows Firewall. It's in the top-left corner of the page.
6 - Click the "Off (not recommended)" box. It's toward the bottom of the page.
7- Click OK. This will disable your Windows Vista computer's firewall.