What is Telecommunication and Network Security


Telecommunication and network security is one of the most technical domains of the CISSP credential because it requires an understanding of network infrastructure, methods of communication, formats for transporting data, and measures taken to secure the network and transmission. The network is the vital link connecting information resources to users. Thus, this domain focuses on the design and architecture of the network and its components to prevent the disruption of data flow and intrusion.

The key components of this domain are:

Confidentiality

Network security protocols
Network authentication services
Data encryption services
Integrity

Firewall services
Communications security management
Intrusion detection services [and intrusion prevention systems]
Availability

Fault tolerance for data availability (backups, redundant disk systems)
Acceptable logins and operating process performance
Reliable and interoperable security processes and network security mechanisms

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