Windows 7 Firewall is very useful.It help prevent hackers from gaining access to our computer through the Internet network.
If you don't know where to turn on Windows Firewall in Windows 7.Here is how-to.
1.Click start buttom and Open the Control Panel.
2.Double Click on the Windows Firewall icon.
3.Choose the "Turn Windows Firewall on or off" in the left pane.
4.Select " Turn on Windows Firewall".Also Check the Windows Firewall notifications settings you want below the "Public newwork location settings".
* Block all incoming connections,including those in the list of allowed programs
* Notify me when windows firewall blocks a new program
5. Click on OK buttom.And close the Windows Firewall window when done.
Now your Windows 7 Firewall start to work.
If you installed Kaspersky Internet Security or other firewall software in windows 7,you'd bettle turn off Windows Firewall.