The three types of security: authentication, encryption and encapsulation, forms the foundation of virtual private networking.

安全有三种：身份验证，加密和封装，它们是各种虚拟专用网络的基础。

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If clients telecommute or are setting up a branch office of a larger corporation, they probably need to use virtual private networking (VPN) features.

如果客户远距离工作或设立一个大公司的分部，他们可能需要使用虚拟专用网(VPN)特性。

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A RRAS server can route network traffic or set up either dial-up networking or a virtual private network (VPN).

RRAS伺服器可以路由网路流量，或设定拨号网路或虚拟私人网路(VPN)。

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Instead, businesses will likely choose dedicated DSL lines for direct Internet access and to connect remote workers to corporate intranets by employing virtual private networking technology.

FORBES: Broadband market offers room for variety

Nortel claims its Shasta 5000 BSN for aggregated DSL or cable offers services such as network-based firewalls, virtual private networking, and traffic engineering for several thousand subscribers over a single chassis.

CNN: Nortel targets new market for broadband

It is hard to see how social networking can be both a platform for me openly share stuff and my private virtual locker.

FORBES: Connect