A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. Firewalls have been a first line of defense in network security for over 25 years.

Internet security refers to security designed to protect systems and the activities of employees and other users while connected to the internet, web browsers, web apps, websites, and networks. Internet security solutions protect users and corporate assets from cybersecurity attacks and threats.