articles-4all

This section tells you how to set up the server side of things.  I figured that this should go first since without a server, your client is kind of useless.
Security − keeping people out
Security is very important for a VPN.  That's why you're building one in the first place, isn't it?  You need to keep a few things in mind while setting up your server....

What is a VPN?
VPN stands for Virtual Private Network.  A VPN uses the Internet as it's transport mechanism, while maintaining the security of the data on the VPN.
But really, what IS a VPN?

Work on developing ISDN began in the  1970s but  would  not  be sold  to the  bandwidth-hungry customer until the  early  to mid 1990s. Many said it was too  little too  late, and  the  consumer...

As you already know, POTS is a transport that runs through the  circuit- switched PSTN. All transport lines  in the  PSTN have  a circuit-identification number, which is either all numeric or alphanumeric. For example, a POTS telephone...