Zone alarm is the best firewall available at the internet? i agree but it has many problems… For example… it is not opening in “Win 7 x64” and It slowdown startup of XP SP3 (On XP sp2 it works fine). Instead of Zone Alarm i think Comodo firewall is a good choice
What Does a Firewall Actually Do? - How-To Geek Sep 21, 2016 How Internet Firewalls Actually Work Here's how a firewall works: The IT (information technology) or network manager sets up specific rules that the firewall will use to filter out unwanted and dangerous intrusions. For example, the firewall could shut down any nonessential ports that a hacker might probe for and open (given the opportunity). Firewall (computing) - Wikipedia In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted internal network and untrusted external network, such as the Internet.. Firewalls are often categorized as either network firewalls or host-based firewalls.
The job of a network security firewall can be divided into two categories. The first is protection. Like in the fortress metaphor, it protects the fortress (network) from infiltrators (malware) attempting to invade it.
The term “firewall” of course starts with actual walls built to prevent against fire. These are still common today in buildings that deal with hazardous materials. If there is a blast or fire, the firewall prevents the blaze from exiting the hazardous area and feeding on the rest of the structure.
Zone alarm is the best firewall available at the internet? i agree but it has many problems… For example… it is not opening in “Win 7 x64” and It slowdown startup of XP SP3 (On XP sp2 it works fine). Instead of Zone Alarm i think Comodo firewall is a good choice
11 Best Free Firewall Programs (Updated July 2020)