NGFW or next-generation firewall refers to the third generation of the popular firewall technology. It combines a traditional firewall and the other network device filtering functions like application firewall using DPI, IPS, etc. The primary purpose of NGFW is to control outgoing and incoming traffic on your network while maintaining the predetermined security rules. It helps prevent unfriendly traffic, thereby blocking the malware and unnecessary application-layer attacks. Therefore, it forms a necessary part of your daily computing habits.