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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Also, many users in social networking sites were said to be only interested in other people`s private information, while being reluctant to share their own information.

当然，据说许多社交网站用户也只对别人的隐私感兴趣，而不愿分享自己的动态。

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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

However, Path is still sticking to its private social networking root.

FORBES: Path 3.0 Is Now A Messaging App Too