Availability
This means that the network should be readily available to its users. This applies to systems and to data. To ensure availability, the network administrator should maintain hardware, make regular upgrades, have a plan for fail-over, and prevent bottlenecks in a network. Attacks such as DoS or DDoS may render a network unavailable as the resources of the network get exhausted. The impact may be significant to the companies and users who rely on the network as a business tool. Thus, proper measures should be taken to prevent such attacks.
CIA Triad
When talking about network security, the CIA triad is one of the most important models which is designed to guide policies for information security within an organization.
CIA stands for :
- Confidentiality
- Integrity
- Availability
These are the objectives that should be kept in mind while securing a network.