Application Guide

2
1. VPN Overview
VPN (Virtual Private Network) is a private network established via the public network,
generally via the Internet. However, the private network is a logical network without any
physical network lines, so it is called Virtual Private Network.
With the wide application of the Internet, more and more data are needed to be shared
through the Internet. Connecting the local network to the Internet directly, though can allow
the data exchange, will cause the private data to be exposed to all the users on the Internet.
The VPN (Virtual Private Network) technology is developed and used to establish the private
network through the public network, which can guarantee a secured data exchange.
VPN adopts the tunneling technology to establish a private connection between two
endpoints. It is a connection secured by encrypting the data and using point-to-point
authentication. As the packets are encapsulated and de-encapsulated in the Router, the
tunneling topology implemented by encapsulating packets is transparent to users.
The tunneling protocols supported by TP-LINK Routers are as below:
Product Model
Tunneling Protocol
TL-ER6120
IPsec、PPTP、L2TP
TL-ER6020
IPsec、PPTP、L2TP
TL-ER604W
IPsec、PPTP、L2TP
TL-R600VPN
IPsec、PPTP