“Network Security” includes the rules and policies adopted by the network management to prevent and monitor unauthorized access, abuse, modification, or constraint on computer networks and resources available on the network, compiled and applied. The terms “network security” and “information security” are often used instead of interconnection. The lack of familiarity of many users and employees of organizations helps the perpetrators to easily enter a computer network and access it to confidential information or to commit malicious acts. Computer networking issues are the most important issues with networks. Computerized the most important part of network setup after the correct configuration of the hardware is the network security assurance. This issue has been investigated in the network security training course. This training course is equal to 90 training hours.