The safe use of Internet resources is always under threat, because there is a large number of malicious programs designed to steal confidential user data. To protect yourself from such threats, a Firewall is installed on your computer.
Features of the work of firewalls
Firewall is a type of antivirus software that significantly reduces the risks for the computer and its user from being on the Internet. Like ordinary antiviruses, they have their own signature database, which is also updated via the Internet. Firewall constantly monitors the current Internet connection, as well as all programs that are currently working with the network.
In most modern firewalls, a list of safe processes is already sewn in, the access of which to the network does not pose any danger to the computer and the user. These are various utility and system programs, software licensed products of large companies, etc. This list is allowed to expand.
Using the latest versions of firewalls and the latest databases of anti-virus signatures ensures a safe user experience on the Internet. Otherwise, the computer may be exposed to a hacker attack using malicious attacks. At best, this will lead to system malfunction. At worst, attackers will gain access to confidential data about payments, licenses, passwords, etc.
Types of firewalls
First, they can be both paid and free. In fact, there are no significant differences between them. Frequently, the paid and free versions of the same firewall are distinguished by the availability of technical support, the absence of pop-up advertisements, the use of additional options, etc. All of this can be discarded if the user is experienced enough.
Second, firewalls may or may not change the default network settings. This is due to the desire of the developer to secure the user from all sides, but in fact this often leads to the fact that he simply cannot access the Internet. Therefore, this option should be used with caution.
Thirdly, these programs can exist both separately and in conjunction with antivirus software. The latter option has a number of advantages, such as saving system resources, unifying the anti-virus database, improved synchronization of interaction, etc. A particularly well-known paid package of such software is Kaspersky Internet Security, but there are also free packages published by Comodo, Avira, Panda and other well-known developers. They also release firewalls separately.
