Don't you still know what an antivirus with a firewall is for? This time we will talk to you a little about What is a firewall antivirus and why should you use it?. Firewalls are generally complements to antivirus. This is a protection system that you may be using without knowing it. In any case, you need to know what it is and what it is for. Next, we are going to detail what its functions are, how useful it is and why it is convenient to have it activated.
What is a firewall antivirus and what is it for?
In the world of computing, a firewall is a system that addresses Block unauthorized access to computers. This while there is some connection of the equipment with authorized services.
In the same way it is usually used in multiple computer connections, especially when they are part of a local network. This is one of the oldest security measures that exists and was created after the birth of the Internet.
This system was born during the 80s, more specifically at the end of the decade. The need to create this system arose because, with the arrival of the Internet, the hackers, who found a way to take advantage of this new interconnection network to cause mischief, steal information or damage equipment. This is why firewalls were created to stop security breaches and malware.
How does a firewall work?
There are two different types of firewalls. They can be obtained as software, hardware or a combination of both. In short, they can be applications that you can install on your computer, or devices that you can physically install.
When we talk about a physical firewall, they are completely independent products, although these are also usually present in most router. The normal thing is that it is located between the point for internet access and the switch. This was done so that the system can filter the information before it is distributed among the other computers connected to the network.
These systems are not very effective in preventing attacks that come from places outside the local network. Therefore, they are very important systems for companies or large networks.
However, They are not effective against attacks from other applications. For example, Trojans or spam messages received by email. The calls Phishing.
The most common in people who have household equipment are those software version firewall. These, in addition to fulfilling the functions already described, usually come with certain official protections that allow us to avoid attacks by Trojans and other viruses. Now, its main weakness is that it can only protect the equipment where it is installed.
Going a little more in depth about their operation, firewalls are located between the local network and the Internet, in order to prevent and block unauthorized access, requested access or access that may represent a potential danger. However, it also allows you to perform an analysis of all the traffic that leaves and enters, which allows configure traffic filters.
Additional functions
Other additional functions of these protection systems is that you can establish unique connections to specific IP servers, which allows for a safety discard of the remaining traffic. This is not recommended for home use as it makes navigation a little more difficult, but used in a company it is a very important tool.
In the same way, it can be established that the browsers of the computers within a company are the only ones that can connect to the Internet, preventing the rest of the applications from doing so.
