Network Security is a term that describes any activities, processes and policies used to protect data and networks against possible, threats, unauthorised connections, modification, etc, that could compromise its accessibility, integrity and/or performance. Malicious actors are stopped from accessing and damaging the network and devices connected it.
The implementation of Network security can involve different layers of defences with processes that can stop possible threats from entering the network.
Some network security tools available;
Basically an invisible barrier that controls traffic in to the network and out from the network, only allowing access from trusted networks, defined by security rules.
Virtual Private Networks encrypts all the transmitted data between two points, using authentication to establish secure communication.
See VPN Services.