A firewall is an application that avoids that unauthorized users access our computer by means of a local web or Internet connection, avoiding that we're affected in any way by trojans, keyloggers or any type of malware that can affect the status of our computer or that can be used to steal our personal data from our computer.
Install a firewall on your PC
PC Tools Firewall Plus is a tool aimed at this type of protection for the domestic user, that hardly needs any kind of configuration, but at the same time allows advanced users to establish the rules for each filter manually.
The application meticulously analyzes the inbound and outbound traffic of our connection to the Internet in real time, with the general purpose of detecting any suspicious element that could affect our computer.
Other features of PC Tools Firewall Plus that stand-out are its automatic update system (Smart Update), rules and setting with a password protection system, and of course the best of all, it's free.