The safe use of Internet resources is always under threat, because there are a lot of malicious programs created to steal confidential user data.
To protect against such threats, a Firewall is installed on your computer.
A firewall is a kind of antivirusPrograms that significantly reduce the risks for the computer and its user from being on the Internet. Like conventional antiviruses, they have their own signature database, also updated via the Internet. The Firewall monitors the current connection to the Internet, as well as all programs that are currently running on the network.
In most modern firewalls already suturedA list of secure processes whose access to the network does not present any danger to the computer and the user. These are various service and system programs, software licensed products of large companies, etc. This list is allowed to expand.
Use of fresh versions of firewalls andThe latest databases of anti-virus signatures ensure the safe stay of the user on the Internet. Otherwise, the computer can be subjected to hacker attack with the help of malicious attacks. At best, this will lead to a malfunction of the system. At worst, intruders will have access to confidential data on payments, licenses, passwords, etc.
Varieties of firewalls
First, they are both paid, andFree. Essential differences between them, in fact, no. Often paid and free versions of the same firewall is characterized by the availability of technical support, the absence of pop-up advertisements, the use of additional options, etc. You can refuse all this if the user is experienced enough.
Secondly, firewalls can change or notChange the default network settings. This is due to the developer's desire to protect the user from all sides, but in fact this often leads to the fact that he can not banally enter the Internet. Therefore, this option should be used with caution.
Thirdly, these programs can existBoth separately and in pairs with the antivirus. The latter option has several advantages, such as system resource savings, unification of 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 issued by Comodo, Avira, Panda and other well-known developers. They also release firewalls separately.