What the heck is a VPN? What is it used for?
I recently installed it on my iPhone, now I have no idea what to do with it. How do I use it…
If you don't know what it is, then you won't be using that.
If you live in a country with a "Great Firewall" (one starting with a C and ending with an A), then you'd need to use a VPN to bypass the firewall in order to get on Youtube, Facebook, and other restricted sites. Or, if you're doing something illegal and need to hide your IP address, then that's what it's for. Or, you may just want to surf anonymously… But even VPNs aren't 100% effective in helping you stay anonymous online.
A VPN is like a virtual reality internet connection between you and a secured network that you couldn't normally access on the internet. It's the equivalent of plugging your computer or cell phone into the wall at your office or university. If you have a VPN connection, you will have access to just about everything you'd have access to if you were right there.
The reason VPNs exist is that computer networks are strongly secured against anyone from the public internet making a connection. A VPN is like a security bypass through all that security. But, it's a lot more complicated than just giving someone a password, which is why VPNs take entire applications to set up.
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