Before doing anything it is worth spending time watching what a VPN is and what it does. VPN is a term that covers a range of technologies that enable users to securely connect to a network from a remote location via a public network, which, in practice, usually means the internet.
There are generally two types of VPN. The first can be described as remote access and allows an individual user or a device for accessing a network to another location via the Internet. The second may be appointed from site to site and is to connect a network to a location in a network to another. For getting VPN programs you can also click this link (also called 이 링크를 클릭하십시오 in the Korean language) and search out the best one for you.
Image Source: Google
How do they work?
To obtain the first objective of this, the devices at each point required to authenticate, usually with the use of passwords along with a mechanism known as biometric scanners and digital certificates to the devices themselves. This also makes sure that a rogue device can not be set up at each point to cut off data or hijack network.
To achieve the second objective, VPNs create what are called “tunnels” through the Internet, through which information can move out of the reach of prying eyes, or sniffing as they are known. In tunnels, it simply involves the encryption of information at one end of the data transfer, then decoded at the other.
They work by transferring packets of encrypted data across the Internet and processing of emission and receiving computers as known as effective devices on the same network. To this end, the packets that comprise an inner and outer package.
The outer package has the task of transporting the internal packet through the Internet from the gateway server on the network from the sender to gateway server on the receiver’s network and therefore only contains information on the gateway servers to which he goes and from. External packets are decrypted when they reach the VPN server on the destination network and the internal packets are then routed to the correct destination computer.