The rapid development of computer network system brings both a great convenience and new security threats for users. Network security problem generally includes network system security and data security. Specifically, it refers to the reliability of network system, confidentiality, integrity and availability of data information in the system. This paper introduces the significance of network security systems and highlights related technologies, mainly authentication, data encryption, firewall and antivirus technology. Network security problems can be faced by any network user, therefore we must greatly prioritize network security, try to prevent hostile attacks and ensure the overall security of the network system.

翻译：计算机网络系统的快速发展在为使用者带来极大便利的同时，也带来了新的安全威胁。网络安全问题通常包括网络系统安全与数据安全，具体而言，涉及网络系统的可靠性，以及系统中数据信息的机密性、完整性和可用性。本文介绍了网络安全系统的重要性，并重点阐述了相关技术，主要包括认证、数据加密、防火墙及防病毒技术。任何网络用户都可能面临网络安全问题，因此我们必须高度重视网络安全，努力防范恶意攻击，确保网络系统的整体安全。