Network security protects networking infrastructure from data theft, unauthorized access, and manipulation.
It also includes network segmentation for security, which involves dividing your network into regions by using firewalls as borders.
There are multiple way to secure the network or data and can be deploy it via multiple method, for Ex. (Virtual, Physical, Cloud).
Also, Next-gen Firewall is the palying major role to secure the network but there are multiple things
can be used, like- IPS, IDS, End-point Security,
Vulnerability Security Check, Cloud Secruity FW, WAF etc.