Cybersecurity tools categories
And the main job of Firewall is to prevent unauthorized access to or from a private network. It can be implemented in the form of a software, hardware or a combination of both. So these Firewalls are used in order to prevent unauthorized internet users from accessing private networks which are connected to the internet. All the messages that enter or leave the intranet will pass through this firewall and the Firewall will examine each message and it will block those messages which do not meet the specified security criteria