Setting Up Virtual Private Networks
If you need an explanation of what the Internet is, here’s a simple one: the Internet is the aggregation of all connected networks that use the Internet protocol. This also means that you can run your personal internet (lowercase i) by connecting a group of networks together that all use the Internet protocol. And many companies do exactly that. They have their own private internet, often called an intranet, of which only a small part is really connected to the Internet (capital I). Clients in the private internet normally connect to the “real thing” over proxies or routers that translate the private addresses to routed addresses. To the Internet, this looks like there is only one machine connected to it that does a huge amount of traffic. For the client, this looks like they can connect to the Internet, but the Internet cannot connect back; those clients just don’t exist there.
KeywordsAdvance Encryption Standard Certificate Authority Virtual Private Network Network Address Translation Security Association
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