What is communications network security? What are the aspects involved?

Communication network security to protect the network system hardware, software, data and communication process, should not be accidental or malicious reasons for damage, change and leakage, to ensure that the system continues to operate reliably and normally, to ensure that network services are not interrupted.

Involving the confidentiality, integrity, availability, authenticity, and controllability of information on the communication network, it is required to have the ability to resist various security threats.