Build a VPN on linode

Original link: http://peopleyun.com /? P = 488

To access multiple App Engine videos on a well-known video website, I set up a VPN based on PPTP on linode. This article will first introduce some information about PPTP VPN, next, we will introduce the creation steps.

 

PPTP VPN

PPTP, short for "Point-to-Point Tunneling Protocol (point-to-point tunnel protocol)", is a VPN technology that supports multiple protocols. Through this protocol, allows remote users to securely access the enterprise network where pptp vpn is installed. In terms of implementation, PPTP consists of two layers: control flow (defined by rfc2637) and data flow (GRE, rfc2784 ). First, the control flow is based on TCP. A control packet of PPTP includes an IP header, a TCP header, and PPTP control information. Second, data streams securely transmit PPP (Point-to-Point Protocol) packets through an encrypted GRE (Generic Routing Encapsulation) pipeline.

 

Procedure

Because the entire process is based on others' tutorials, the specific steps are based on links to relevant tutorials.

There are three main steps:

1. Deploy a linode instance, which can be Ubuntu 9.10 or centos. For details, please refer to this official tutorial, but you do not have to rush to complete all the steps, as long as you can connect to it through putty or ssh.
2. Install the PPTP service on this linode instance. If you select the Ubuntu 9.10 system for your linode instance, see install pptp vpn on linode VPS (note, username and password in "username pptpd password *" in the middle of this article refer to the username and password to be specified by the user). If centos is used, see install pptp vpn under centos (Note: I have not tested this article ).
3. Create a pptp vpn link on Windows. If Windows 7 is used, follow the steps in Windows 7 pptp vpn usage and domestic network acceleration tutorial. If XP is used, steps for setting pptp vpn in Windows XP (Note: I have not tested this article. To successfully create a pptp vpn on Windows 7.

 

Figure 1. Created successfully

 

 

User Experience

Although no specific tests were conducted for VPN use over the past two days, the user experience is quite good, because there is basically no latency, in addition, the download speed can reach the maximum download speed of my ADSL (because I am 512 K, the maximum download speed is about 60 K), but it has consumed GB of bandwidth, therefore, if I want to use VPN anytime, anywhere, I may use up the GB Bandwidth quota of the linode360 package, so the VPN must be used in the "cutting edge.

 

Also, I will constantly upload videos that I think are very technical to my Youku space. If you are interested in these videos, click here! I hope this article will help you solve some of the unexpected needs.

References:

1. PPTP Baidu encyclopedia.
2. Point-to-Point Tunneling Protocol.
3. When Nat encounters PPTP.