What are the uses of firewall?

As you know, a firewall is a layer of security that can be hardware or software that their purpose of development ( in Slovak:  softvér, ktorý je účelom ich vývoja  ) is increasing security that is used to protect the system against trojans, viruses, and dangerous packets. This type of software and hardware, which are used to take care of the system and increase it, examines all the data packets that come out of the system or enter the system, and if it is not suspicious, they are allowed to Give entry or exit. In other words, we can say that firewalls are software and hardware. In this case, we can say that in computer networks that are used to transfer data, when transferring data and entering and exiting different types of data packets to the system, software and firewall that is like a layer of security They are placed at the gateway so that they can check the packets entering the system to see if they are safe or not, and then you decide to allow them to enter or block them.

What is the use of a firewall, and why do I use it?

As you know, firewalls have the primary purpose of isolating data and data packets that are secure from insecure environments and preventing them from being accessed.  Firewalls are used to check the input and output packets and communications of systems, and if inputs and outputs are safe and sound, allow them to enter and otherwise block them. In other words, we can say that the main purpose and main application of firewalls are to be able to check the input or output information packages by being at the gates of computer networks and systems so that if they are allowed and secure, they can be entered and otherwise they are blocked.

Here's what firewalls do:

Confirm user access credentials protection of resources and data in the network and computer systems record and save as well as provide reports of events that have occurred acting as an intermediary between inside and outside the networkManagement and control of computer network traffic

How can we set up a firewall on the system?

It should be noted that to set the firewall on the Rio system. We must first know where the system firewall is located. There are several ways we can use this to find out where the firewall is in our system.

Ways to know where the firewall is in the system:

1- First, we must click on search in the system desktop and then search for the word firewall in it.

2- After the results are displayed, we click on windows firewall with advanced security until they can see the firewall management page by clicking on this option.

Here's another way to access the Windows Firewall:

1- First, we must click on the Start System menu.

2- Then, select the Windows Administrative Tools option.

3- After that, it is better to click on the Windows Firewall with the Advanced Security option.

How can we enable a firewall on our system?

Suppose you want to activate and install the firewall as a security layer to increase and secure your system. In that case, it is better to know that the firewall is automatically activated and installed on Windows operating systems that have an updated version. In these versions of operating systems, you do not need to select an option until you can use it to activate the system firewall. But it is worth noting that for any reason if your system firewall is disabled, it is better to go through the steps below before you can activate your system firewall.

To enable your system firewall better, follow the steps below:

1- To do this, it is better first to select the Windows Firewall with the Advanced Security option. After selecting this option on the right side of the window that opens for you, it is better to choose the Properties option to activate your system firewall.

2- After that, a window will open for you, in which it is better to click on the Firewall state option and set the Domain, ‌ Private and Public tabs that appear when clicking on this option to Domain, و Private and Public.

How can we disable our system firewall?

To disable the system firewall, it is better to follow the methods that we did to activate it. In other words, the methods used to disable the system firewall are the same as the methods used to enable it. But the difference is that by clicking on the option that shows us the three tabs, it is better to set them to Off instead of putting them too On.

Keep in mind that let your system firewall always be on the version, and if you need to install software and allow full access to it, it is better not to disable it, and with the methods listed below, you can Install them.

How to install software on a firewall?

You may be asked to install software on your system, but you are asked to disable software access to the Internet and firewalls to allow the software to install the software on the system. Install. In this case, it is better to install the desired software on your firewall and make settings for it until the program access is blocked. To block program access, it is better to select the option Windows Firewall with Advanced Security

and then click on Outbound rules or Inbound rules.

The difference between these two options is that you want to change the Inbound program to the operating system or Outbound.

1- In this article, we want to examine the traffic and data packets that leave our system, which is why I choose Outbound.

2- After that, it is better to click on the New Rule option.

3- Next, in the new window that opens, select the Program option, and select the Next option.

4- Then, we select the Browse option, enter the exe file of the program that we want to be blocked, and click Next.

Firewalls are divided into sections in terms of security level:

- Circuit Level based firewalls

- Proxy Server based firewalls

- Packet Filtering based firewalls

- Stateful inspection package-based firewalls

Personal Firewall

Why should we use firewalls, and what are their advantages?  - It is worth noting that firewalls have this feature and the ability to manage the input and output of the network and its traffic.

Using firewalls is like using office automation. In other words, using firewalls and automation manages public access to internal resources through an external network.

- In using firewalls, it is possible to manage to send and receive employees and their different groupings.

- In using the firewall, all the requests that users send in the internal networks are listed, and when there is a suspicious case, they view them and submit them to the system administrator.

- Firewalls can check all the traffic in the networks

and compare them using some predefined criteria and then make decisions based on them.

We learned that firewalls can be software or hardware and can care for and secure the system. The use of firewalls is that by being at the gate of the network, it examines all data packets and data and, if there is no problem, allows them to enter, and if it detects a suspicious case, blocks them, and prevents them from entering the system.