How to Stop People from Accessing Backdoors
A backdoor entry is a method of bypassing security prevention by entering through another means, such as a small hacking application. The best way to prevent your computer from backdoor attacks is to use a firewall. Firewalls will check all data that is downloaded or uploaded from your computer. Anytime any new data is detected, it will prompt you to either accept or decline the data. Therefore, it is useful to use a firewall which will alert you whenever a backdoor attempt is made. Windows has an built-in firewall you can enable if you have already turned it off.
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Instructions
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Click "Start," then "Control Panel."
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Type "firewall" into the search and click "Windows Firewall."
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Click "Turn Windows Firewall On or Off." Enter your admin password and press "Enter."
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Click "Turn on Windows Firewall," then "OK."
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