... common network vulnerabilities, network security threats and attacks, security measures and tools, and the develop-ment of a network security policy and proper violation response plan. Network Security ... confidentiality and secrecy (SunMicrosystems, 1999).IntegrityIntegrity includes the security of the network periphery, security of the network devices, and security of theflows of information ... auditing,reporting, and subsequent reviews of related security events.Hierarchy of Network Security SystemsThe United States Department of Defense has classified four hierarchies of network security systems....