A firewall is part of a computer network designed to block unauthorized access whilst permitting authorized communications. It is a device or set of devices configured to permit, deny, encrypt, decrypt, or proxy computer traffic between different security domains based upon a set of pre-defined rules.
Firewalls offer comprehensive network protection from online threats, as such their usage is essential to any security minded business. As well as offering protection for your network, a firewall can also be configured to block access to URLs that you do not want employees accessing such as social media sites.
If you need protection on your IT network, get in touch with ASAP IT Support for a solution.