What is a Firewall on a Computer

Many users of personal computers often wonder what is the firewall. In this article we will try to detail and simply explain what a firewall is and what it needs. If your computer is confidential information, there is no guarantee that it will not be made public. However, such guarantees are needed, especially those who work with very important classified information. Data protection provides just the firewall.


 Firewall needs to provide some barrier between your network and your computer. That is, it serves as a filter. How it works is that the program keeps track of the connection of personal computer, and then analyzes them and makes a decision as to whether to allow the connection or not.

In simple terms, the program skips that allowed the user, while not missing anything else. However, to ensure complete safety program can not, because no one can give 100% guarantee. However, for those who want to hack a computer, the wall is no small obstacle. It all depends on the experience of the hacker.

In order to maximize the user's computer is protected, you need to configure. The main recommendations are the settings to allow connections only to those programs that really need to connect.

Thus it is necessary to ensure that the program had access to only those ports on which it works, no more. It sounds complicated, but in today's firewalls are setup assistants that greatly simplifies the process, prompting the user.

In addition, you must be attentive to the program and service always read the messages that appear while you work. They often contain different kinds of warnings on the computer and its connections.

Looking further, what is a firewall should be mentioned that there are two basic types of walls. It's personal and corporate walls walls. Personal Wall is a program installed on an ordinary user's computer. As for the corporate firewall, it is installed on the gateway between the LAN and the Internet.

If a person has a personal firewall, then it has a built-in learning mode. With it easier to understand how the program works and what to admit to the mix, and that the ban.

If one of the programs installed on your computer, not suitable for firewall rules, it appears that the user was able to independently decide whether to authorize or deny the connection. Personal firewalls today are many, among them easy to pick the correct one. Regardless of the kind of features they do not differ from each other. The main differences lie in how easy to use a particular program, in which one is more interesting and easy to use interface, and also that the program is paid or free. It should be noted that many antivirus programs have in their composition built firewall.

Corporate firewall is a program that are installed as a gateway between the LAN and the Internet. Adjusts the firewalls are a system administrator, thereby protecting the entire network from attacks and its member computers.


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