When we connect our computer to a private LAN or the Internet, we open a door that can be used by hackers to attack us or steal our private details. To fight against this type of threat we have firewalls. One of the best free firewalls available at present is ZoneAlarm Free.
The most downloaded firewall in the world.
A high quality firewall
This type of tool controls all the incoming and outgoing connections of our PC, keeping us informed about all of them and preventing those that we don't want to be started. Before Windows systems and the majority of antiviruses included firewalls, ZoneAlarm Free became popular as a competent security server with a user-friendly interface, that in addition was completely free.
ZoneAlarm Free is still one of the best firewalls around. The little brother of the protection products developed by ZoneAlarm doesn't include an antivirus nor antispyware functions, focusing all its power on detecting and blocking strange connections.
If you complement this application with one of the free antiviruses and antispyware programs that we can find on the Internet, we can achieve the same protection levels we would have with a paid solution. As a firewall application, it has as many options available and the same efficiency of even the most expensive programs on the market, allowing us to establish all kinds of rules by means of a user-friendly interface. Its capacity to control our email is very interesting, because it can avoid a bot from sending unwanted mail to any of our friends without our permission.
One of the best firewalls around, and even better, it's completely free.