The term “Next-Generation Firewall” (NGFW) was first coined by Gartner Research, and it refers to the third generation of network firewall technology. These firewalls build on the previous generation of firewalls—which were limited to port/protocol inspection and blocking—by tightly integrating additional capabilities, such as in-line deep packet inspection (DPI), intrusion prevention (IPS), and application-level traffic inspection. Some NGFWs also enable TLS/SSL encrypted traffic inspection, website filtering, QoS/bandwidth management, antivirus inspection, and integration with third-party identity management systems such as LDAP, RADIUS, and Active Directory.
There are many type models and editions to choose of Barracuda NGFW. There are models F12, F18, F80B, F82.DSLA, F93.R, F180, F183, F183R, F280, F380 and many more models. For more information, you can check their official website below.