ELEMENTS OF NETWORK SECURITY
Network Access Control (NAC)
NAC basically allows the admin to understand and control who can and cannot access the network. NAC identifies what users and devices are allowed on the network. This helps the admin to remain aware of which devices are blocked
A firewall is a network security device that monitors outgoing and incoming network traffic, forming a type of barrier between an untrusted and trusted network. Firewall security decides whether to block or allow specific traffic in the network or not. It is one of the first lines of defense.
Intrusion Prevention System or IPS
IPS or Intrusion Prevention System is a threat prevention technology that examines, identifies, and prevents unusual network traffic from exploiting vulnerabilities, such as malicious inputs, target supplication or service to gain control or interrupt a machine or application
SIEM or Security Information and Event Management
SIEM is an approach towards security management which combines Security Event Management and Security Information Management into one composite security management system.