pptp-note

server:

https://help.ubuntu.com/community/PPTPServer sudo apt-get install pptpd

/etc/pptpd.conf localip 192.168.0.1 remoteip 192.168.0.100-200

/etc/ppp/chap-secrets

client server secret IP addresses

username * myPassword *

client:

pptpsetup --create vpn --server ** --username ** --password ** --encrypt --start

troubleshooting:

centos modprobe nf_conntrack_pptp modprobe nf_conntrack_proto_gre

if MS-CHAPv2 mutual authentication failed. connect using windows client once, then linux can connect