What is a VPN?

VPN stands for virtual private network, or also private network (not for public access) that use non-personal medium (eg the Internet) to connect remote-site inter safely. VPN is a private network (typically to a particular agency or group) in the Internet network (the public), where this private network as if they were accessing the local network but use the public network. Mengunkan need certain technologies despite using common media, but traffic (traffic) between the remote site can not be intercepted easily leh others, also do not allow others to smuggle undue traffic into our own remote-site.

VPN working concept basically Requires a server that serves as a liaison between perangjkat are connected. If depicted roughly like this

Internet <-> VPN Server <-> VPN Client <-> Client

So all governed by the VPN Server connection so that it takes adequate ability VPN Server so that connections can be smoothly.

how VPN

first of all VPN Server must be configured first and then the client must be installed VPN program only after that can be connected. VPN on the client side will be making some sort of virtual connections so it will appear VPN network adater sort of network adapters (Lan card), but virtual. The task of the VPN Client is subject to authentication and encryption / decryption.

Well after connected then later when the client to access the data tell a client wants to open the site www.google.com. This request before it is sent to the VPN server is first encrypted by the VPN Client eg encrypted with a formula so that the data request will contain code. After arriving to the VPN server by the server to decrypt the data in the formula A, having previously been configured between the server and the client, the server will have the same algorith to read an encryption. And vice versa from the server to the client.

Security With such a concept, the VPN network offers security and untraceable, can not be detected so that our IP is not known because used are owned Public IP VPN server. With no encryption and decryption of the data through the internet network can not be accessed by others even by another client connected to the same VPN server though. Due to unlock the encryption key known only to the VPN server and client are connected.

Encryption and decryption causes the data can not be modified and read so that keamananya guaranteed. To break down the data the hijackers data must be put through the process of decryption of course to find the right formula takes a very long time so accustomed to using super computing to break down and certainly not everyone has a PC with super abilities and the process is complicated and takes a long time, agents FBI or CIA usually have this kind of computer to read the confidential data that is sent through the VPN.

Is using a VPN connection that is faster? It depends on the connection between the client and the VPN server for the data processing is done on the VPN automatically all the data coming into your computer from the Internet will go first to the VPN server so when a client connection to a VPN server is good, then the connection will also be faster. Usually what happens is a decrease in speed becomes a little slower because it must pass through two lines including the first encryption process.