影响网络的因素很多,保护网络安全的技术、手段也很多。一般来说,保护网络安全的主要技术有防火墙技术、入侵检测技术、安全评估技术、防病毒技术、加密技术、身份认证技术,等等。为了保护网络系统的安全,必须结合网络的具体需求,将多种安全措施进行整合,建立一个完整的、立体的、多层次的网络 There are many factors that affect the network. There are many technologies and means to protect the network security. In general, the main technology to protect network security firewall technology, intrusion detection technology, security assessment technology, anti-virus technology, encryption technology, authentication technology, and so on. In order to protect the security of the network system, we must combine the specific needs of the network, the integration of a variety of security measures to establish a complete, three-dimensional, multi-level network