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This article introduces the relevant knowledge of "how to install PPTP in CentOS system". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

This article is suitable for VPS that can activate TUN and PPP, only Xen and OpenVZ,OpenVZ. If you use the SolusVM control panel, you can open it yourself in the background. By the way, my operating system is CentOS6.4 32 bit.

1. Confirm the activation of TUN and PPP

Xen users, please ignore this step!

The code is as follows:

Cat / dev/ppp

The output is: cat: / dev/ppp: No such device or address

The code is as follows:

Cat / dev/net/tun

The output is: cat: / dev/net/tun: File descriptor in bad state

If the output of these two items is different from what I have given, but as long as it is not "Permission denied", it will be fine, otherwise it must not be installed.

Second, install PPP,PPTP

It is recommended that you uninstall your own PPP first.

The code is as follows:

Yum remove ppp

Install libpcap

The code is as follows:

Yum-y install libpcap

Install ppp-2.4.5-5

The code is as follows:

Rpm-ivh https://lccss.googlecode.com/files/ppp-2.4.5-5.el6.i686.rpm

Or

The code is as follows:

Yum-y install ppp

Install pptpd-1.3.4-2

The code is as follows:

Rpm-ivh http://lccss.googlecode.com/files/pptpd-1.3.4-1.el6.nux.i686.rpm

Update, if it is CentOS6, you can use yum installation directly to save the trouble above. The default yum does not have pptp, so upgrade the source first:

The code is as follows:

Rpm-Uvh http://poptop.sourceforge.net/yum/stable/rhel6/pptp-release-current.noarch.rpm

Then install pptpd directly (ppp and libpcap will be installed together)

The code is as follows:

Yum install pptpd

III. Various configurations

The left side of the arrow is the content that needs to be modified, and the right side of the arrow is what it should look like after modification.

The code is as follows:

Vi / etc/pptpd.conf

Get rid of #

The code is as follows:

# localip 192.168.0.1-> localip 192.168.0.1

# remoteip 192.168.0.234-238192.168.0.245-> remoteip 192.168.0.234-238192.168.0.245

Vi / etc/ppp/options.pptpd

Remove # and replace it with google's dns

The code is as follows:

# ms-dns 192.168.0.1-> ms-dns 8.8.8.8

# ms-dns 192.168.0.2-> ms-dns 8.8.4.4

Vi / etc/ppp/chap-secrets

Create a username, password and qualified IP in the format: username, ppptp password, IP address

Each field is separated by a space. If the last IP address is not qualified, use * instead, for example:

The code is as follows:

Username pptpd password *

This means that you have created a user named username with a password of password, and any IP can connect.

The code is as follows:

Vi / etc/sysctl.conf

Net.ipv4.ip_forward = 0-> net.ipv4.ip_forward = 1

Sysctl-p

Firewall forwarding is different between Xen and OpenVZ

For OpenVZ, please use:

The code is as follows:

Iptables-t nat-A POSTROUTING-s 192.168.0 VPS 24-j SNAT-- to-source your VPS IP

For Xen, please use:

The code is as follows:

Iptables-t nat-A POSTROUTING-s 192.168.8.0 eth0 24-o eth0-j MASQUERADE

Save and restart the firewall

The code is as follows:

/ etc/init.d/iptables save

/ etc/init.d/iptables restart

Turn on pptpd

The code is as follows:

Service pptpd start

OK, now you can use your computer to connect to your pptp vpn!

IV. Other minor problems

619 error, try:

The code is as follows:

Rm-r / dev/ppp

Mknod / dev/ppp c 108 0

Because I don't know much about iptables, so I used a silly method, that is, to clear all the previous firewall rules, and then use the above rules to keep restarting. Clear previous firewall rules:

The code is as follows:

Iptables-F

Iptables-X

Iptables-Z

This is the end of the content of "how to install PPTP in CentOS system". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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