摘要
随着Internet访问的增加。传统的Internet接入服务已越来越满足不了用户需求。因为传统的Internet只提供浏览、电子邮件等单一服务，没有服务质量保证，没有权限和安全机制，界面复杂不易掌握，VPN的提出就是来解决这些问题。VPN的组网方式为企业提供了一种低成本的网络基础设施，并增加了企业网络功能，扩大了其专用网的范围。VPN技术已经发展了几个阶段。结合相关阶段的技术进行研究，进而展望下一代VPN技术。
With the rapid increase of Intemet browsing, more and more users have got unsatisfied with traditional service of internet access because of inflexibility of service, lacking of access quality insurance, poor in mechanism of security and authorization and the complexity of user interface. All of these factors conduced the emergence of VPN. VPN has provided a kind of low cost fundamental equipments for all kinds of corporations, enhanced the functions of their networks, expanded the areas that their exclusive networks could be implemented. So far as we know, there are several steps of development of VPN. Here we have reviewed the corresponding technologies of these steps and discussed the prospect of VPN.
作者
焦青亮
JIAO Qing-liang （Harbin Institute of Technology,Harbin 150001,China）
出处
《电脑知识与技术》
2007年第1期56-57,67,共3页
Computer Knowledge and Technology
