浅谈网络信息安全的关键技术

人们在享受因特网所提供的各种好处的同时，还必须考虑如何对待网上日益泛滥的信息垃圾和非法行为，必须研究如何解决因特网上的安全问题。主要介绍了身份认证技术、防火墙技术、加密型网络安全技术、PKI技术、虚拟专用网技术、安全隔离技术和反入侵技术等目前常用的网络信息安全关键技术的原理及其应用，并指出其中一些技术的优缺点。

The Key Technology of Network Information Security

When people enjoy the various advantages in Intemet, they must also consider how to deal with the growing proliferation of online information litter and illegal acts, and study how to solve the security problems in it. This paper mainly introduces the technology of identity authentication, firewall, encryption-based network security, PKI, virtual private network, security isolation and anti-invasive techniques that currently used in key network information security technology and its application, and points out some advantages and disadvantages of the technology.