What is VPN?

Before routing wrote aboutHow to quickly build pptp VPN based on vpsArticles,But it seems there are still many people do not know exactly what that VPN,Then this article I am 818 devoted to the VPN in the end is what!

Speaking VPN,We still want to talk about the 1990s,Then this concept can not VPN,Companies to the Internet,To purchase a dedicated line (Line relates to the content of my[……]

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