Run pptpd on CentOS to implement VPN service

Buy a cheap VPS and install the linux system. run pptpd to implement the VPN service and use the famous iptables for nat forwarding. This looks like a professional VPN service. Configure the user name and password to implement a vpn shared by multiple users. the simple steps are as follows: 1 buy vps5.99 $/year https://bandwagonhost.com/aff.php?aff=1018 Buy a cheap VPS and install the linux system. run pptpd to implement the VPN service and use the famous iptables for nat forwarding. This looks like a professional VPN service. Configure the user name and password to implement a vpn shared by multiple users. the simple steps are as follows: 1 buy vps 5.99 $/year https://bandwagonhost.com/aff.php?aff=1018 _________________________________________________ 2 steps for installing centos5 linux _________________________________________________________ 3 install pptpd and follow the steps below wget http://www.diahosting.com/dload/pptpd.sh # Download the installation script sh pptpd. sh # execute this script, the corresponding rpm-ivh ppp-2.4.4-9.0.rhel5.i386.rpm will be automatically downloaded # install ppp, since pptpd depends on this package rpm-ivh pptpd-1.3.4-1.rhel5.1.i386.rpm # install pptpd _________________________________________________________ 4 configure pptpd edit/etc/pptpd. add the following two lines to the conf file: localip 192.168.0.2 # vpn service ipremoteip 192.168.0.234-238 # vpn client ip automatic allocation range editing/etc/ppp/chap-secrets add user abc password 123abc pptpd "123 "* modify DNS server, edit/etc/ppp/options and add the following content: ms-dns 8.8.8.8ms-dns 8.8.4.4 edit/etc/sysctl. conf file. comment out before ipv4.ip _ forward = 1. enable ipv4 forwarding and run the following command to make the configuration modification take effect. sysctl-p restarts pptpd service/etc/init. d/pptpd restart (now pptpd configuration is complete) 5 configure iptables for forwarding, after connecting to the vpn, you can access the Internet and execute the following command: iptables-t nat-a postrouting-s 192.168.0.0/24-j SNAT -- to-source IP, and then execute service iptables save to save it, then restart the service iptables restart. here, the 192 CIDR block is the vpn intranet segment and the IP address is the public IP address of the vps. Note that the iptables is configured as follows because of the openvz architecture, for the zen architecture vps, refer http://www.chenjunlu.com/2012/04/how-to-setup-a-pptp-vpn-server-under-linode-vps/, How to distinguish these two architectures, refer http://lrbnew.blog.163.com/blog/static/3247877201472525341798/ 6. configure the vpn in win7, enter your vps public ip address, pptpd user name and password, and you will be able to use the vpn provided by this vps normally. This article references http://www.chenjunlu.com/2012/04/how-to-setup-a-pptp-vpn-server-under-linode-vps/