How to use a firewall to prevent unauthorized access


Firewalls, also known as English FireWall, a tool built into Windows helps prevent malicious objects from invading the computer. But useful, but not everyone knows how to use this tool. The following article will show you how to use a firewall to block unauthorized access.


Using a firewall to block unauthorized access is one of the good measures to help you eliminate bad objects that have access to your computer. Turning on a firewall and using it seem to be forgotten because there are so many anti-virus software these days, but there are still many features that not everyone knows about FireWall. like the benefits of turning on firewalls on computers.

To gain a better understanding of how to use a basic firewall to block unauthorized access, this article will illustrate specifically for you on how to turn on a firewall and how to use a firewall to block unauthorized access.

Instructions for using a firewall to block unauthorized access

1. Turn on the wall and use.

Step 1: First you open Start menu up and type Control Panel, here we will access the Control Panel to turn on FireWall.

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Step 2: In the Control Panel, look for the item System and Security if the view is the form Category as in the picture. And if the view form Small icon then you can immediately select the Windows FireWall section.

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Step 3: In System and Security you continue to access Windows Firewall.

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Step 4: In the Windows FireWall section you just need to click on the section Turn Windows FireWall on or off to start FireWall, the first step before using a firewall to block unauthorized access.

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Step 5: Here is the value though private good Public You also to Turn on Windows FireWall Go ahead and then press OK, got it.

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And then you will see the icon Private networks confused Guest or public Networks outside the blue, so we have completed the switch to turn on FireWall, but now let’s switch to using a firewall to block unauthorized access.

2. How to use a firewall to block unauthorized access

Step 1: Continuing in the Windows FireWall section, click next to Allow an app or feature through Windows FireWall.

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Step 2: Here is a list of applications, software or services that are allowed to be included private (private) Public (public), unchecking both is not allowed. If you want to add the application you choose Allow another App.

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Step 3: Keep clicking Browse To find links to software and applications you need to access.

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After making your selection you just need to click Add is to be.

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Step 4: Here you have the right to grant the selected application access to that application or not, otherwise leave both unchecked.

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And if any application runs requiring Internet, a notice will appear as below.

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Above is a way to use a firewall to block unauthorized access, you can use it to apply to any software or object. In addition, processes and services can be viewed in the list and blocked from within it. Although the use of firewalls to block unauthorized access is still quite limited, it helps reduce the risks that may harm the computer. And it is better to use an additional anti-virus software to combine use with FireWall. The combination of FireWall and anti-virus software will increase the ability to fight viruses and malicious code, but it also makes your computer a bit heavier, so readers should consider using this solution.

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