NGFW is a hardware- or software-based network security system that detects and blocks sophisticated attacks by enforcing security policies at the application level, as well as at the port and protocol level.
Next-Generation Firewall (Wikipedia)
A next-generation firewall (NGFW) is a part of the third generation of firewall technology, combining a traditional firewall with other network device filtering functions, such as an application firewall using in-line deep packet inspection (DPI), an intrusion prevention system (IPS). Other techniques might also be employed, such as TLS/SSL encrypted traffic inspection, website filtering, QoS/bandwidth management, antivirus inspection, third-party identity management integration (i.e. LDAP, RADIUS, Active Directory)., and SSL decryption
