Content

• To step
• Method 1 of 2: Access Windows Firewall
• Method 2 of 2: Blocking a program with the firewall
• Tips
• Warnings

Windows Firewall is free and part of Windows. If you want to block a program or a hacker, just open Windows Firewall and follow the steps below.

To step

Method 1 of 2: Access Windows Firewall

1. Open Firewall in Windows 8. In the Start screen, type firewall and select your Windows Firewall. You can also click Settings and select Windows Firewall.
2. Open the Firewall in Windows 7 / Vista / XP. Click Start and select Run. Enter firewall.cpl and then click OK. You can also access Windows Firewall from Control Panel.

Method 2 of 2: Blocking a program with the firewall

1. Click on the “Allow an app or feature to access through Windows Firewall” link. This may also be called “Allow a program through Windows Firewall”. This will open a list of programs with check boxes next to them.
2. Click on the "Change settings" button. To be able to adjust the settings, you may have to press the “Change settings” button. If a password is required, enter it now.
3. Uncheck the box for the program you want to block. When the box is unchecked, the firewall will block access to the Internet for that program.
   • If you would like the program to be blocked when connecting to a public network, but not to a private network or vice versa, select or clear the appropriate checkboxes to the right of the programs list.
   • Checking the boxes will allow the program in question to access the Internet. Only do this with programs you trust.
4. Save your settings. When you are done making changes, click OK to save your firewall settings.

Tips

• If you cannot find the desired program or function in the list displayed, you can click the "Add Program" button to add a program / function from the list of installed programs on your system.

Warnings

• If you are not sure whether a program is safe or not, it is better not to give this program access using the firewall. Otherwise, your system will be more vulnerable to viruses and other malicious software.