To teach you to set up a VPN line

Frequent business trip friends, for VPN network should be not unfamiliar, because access to VPN network, no matter where you can through the Internet at any time, to remote access to the internal network of enterprises, access to internal data. And with China's "broadband China" strategy of in-depth promotion, optical fiber home gradually landing, the family network applications began to become more and more colorful, some friends also want to have a convenient VPN line, to access the resource content of the home network at any time. So how to build a VPN network? Let's get to the bottom of it.

Erecting a VPN server

VPN is virtual private network, the English abbreviation of the fictitious private network, before the general application in the enterprise, is the expansion of the intranet of the enterprise. As businesses grow and grow, offices, affiliates, business travelers, and business partners are growing, and VPNs can make these small office networks, mobile office employees, and corporate headquarters networks economically flexible and efficient to interconnect.

The basic idea is to establish a secure private network on the public network to transmit the internal information and form a logical network, thus providing the enterprise users with more low-cost and higher security resources sharing and interconnection services. The first step to build a VPN line is to build a VPN server through a router. Of these, PPTP is a fast and easy to use protocol for different VPN protocols. If your device does not support OpenVPN, PPTP is a good choice.

In the case of Asus RT-AC87U, after entering its web configuration interface, locate the VPN option in the advanced settings, and you can see the virtual private network (VPN) server-PPTP interface and select Open Virtual private network (VPN) server.

Open Virtual Private Network (VPN) server (click to see larger image)

Then you can see the details of the setup instructions, users configure it accordingly. The second item sets the IP pool (IP address pool) for the client and the default maximum access to 10 devices, if not necessary. ASUS RT-AC87U will automatically prompt you that the current extranet address is the address of the VPN server. If your external network is using dynamic IP, you need to set up DDNS (dynamic Domain name resolution Service).

If your external network is using dynamic IP, you need to set up DDNS (dynamic Domain name resolution Service).

DDNS can bind any transformed IP address to a fixed level two domain name, regardless of how the IP address of this line changes, Internet users can use this fixed domain name, access or login with the dynamic domain name established by the server. With this dynamic domain name, wherever there is a network, it can be used to remotely access the home erected VPN server.

Therefore, in the router supported by the list of service providers to select a dynamic Domain name resolution service, so that the router in each Internet IP address updates at the same time automatically update the dynamic domain name and IP address of the corresponding relationship, so that you can have a access to the home network fixed domain name.

Then check the router's external network (WAN)-NAT passthrough to ensure that the network protocols used by the VPN server are open and supported. If the router provides a firewall, you need to ensure that it does not affect the VPN service.

Ensure that the network protocols used by the VPN server are open, supported

It is then important to set up the account and password for the VPN client in the virtual private network (VPN) server-PPTP interface, and in the "User name and password" list below, click the "Add" icon to add it.

Set up an account and password for the VPN client

After the above steps are completed, the VPN server is built. So how do you set up VPN access configuration on the mobile end?

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