亲爱的翻译官分手剧情:HElP! 翻译成英文~

Nowadays,VPN forecasts the trend of network development.It integrates both good performance(good security and Qos) of the traditionl networks and constructive merits(simplisity and low cost) of shared networks.It can provide remote access and conjuncton between internal networks and external ones.The cost is much lower,compared with costs of special lines or Frame-Relay,what is more ,it is one of the most promising methods to network communication which can strike a decent balance between relevance and price. In this chapter,related information are introduced on VPN:its concept,its operational mechanism,its architecture.Thereon,the development of VPN,the construction,security implementation,market prospect,application fields and some typical cases are analyzed and elaborated in this chapter.

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