Steps to Setup VPN PPTP Client on CentOS7

 

1. Install PPTP: sudo yum install pptp pptp-setup
2. Configuration: sudo pptpsetup –create config –server [server address] –username [username] –password [pwd] –encrypt
   • This command will create a file named config under /etc/ppp/peers/ with server info written inside.
   • This command will also write your username and password into /etc/ppp/chap-secrets
3. Register the ppp_mppe kernel module: sudo modprobe ppp_mppe
4. Register the nf_conntrack_pptp kernel module: sudo modprobe nf_conntrack_pptp
5. Connect to VPN PPTP: sudo pppd call config
   • It will establish PPTP VPN connection. You can type command ip a I grep ppp to find the connection name (e.g. ppp1). No return indicates connection failure.
   • If any error, you can look into /var/log/messages for log info
6. Check IP routing table info: route -n
7. Add Network Segment to current connection: route add -net 192.168.1.0 netmask 255.255.255.0 dev ppp1 (192.168.1.0 and ppp1 are taken as example )
8. You can now ping the destination to check the access
9. Disconnect the VPN: killall pppd

 

 Source : https://zlthinker.github.io/Setup-VPN-on-CentOS