Computer Network Defense is a complete strategy designed to safeguard computer networks against many types of security breaches and guarantee the privacy, availability, and integrity of data. The primary goal of CND is to identify, address, and lessen cyberthreats in order to preserve a network's operational functionality.

The Intrusion Detection System is an essential aspect of computer network defense $($IDS$).$ One essential tool for spotting and handling illegal access or questionable activity on a network is an intrusion detection system, or IDS. It functions by keeping an eye on system and$/$or network activity, examining it for indications of security issues, and, if any possible dangers are found, issuing alerts or taking preventative measures.