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A firewall is a network security device that grants or rejects network access to traffic flows between an untrusted zone and a trusted zone
Early on, stateful inspection firewalls classified traffic by looking only at the destination port (e.g., tcp/80 = HTTP). As the need for application awareness arose, many vendors added application visibility and other software or hardware ‘blades’ into their stateful inspection firewall and sold the offering as a UTM (Unified Threat Management). UTMs did not improve security since the functions were retrofitted into the firewall, and not natively integrated.
Unlike UTM, a Next Generation Firewall is application aware and makes decisions based on application, user and content. It’s natively integrated design simplifies operation and improves security. Given its success, the term NGFW has now become synonymous with firewall.
By year-end 2019, 90-percent of enterprise internet connections for the installed base will be secured using next-generation firewalls1.
More info: www.fieldengineer.com/c1/desktop-technicians