Configure pptpd vpn with ms-chapv2 and mppe on Ubuntu

We've installed a NAT+VPN to get rid of Microsoft's one, and implemented the same functionality with PoPToP version 1.3.0. The necessary settings are the following: 1) try if you have the necessary kernel modules (in Ubuntu 6.10, all is included. if you don't have them, you're doomed - you need to re-compile your kernel) modprobe ppp_mppe modprobe ip_gre if the reply is the well known unix's golden silence, you need to add the modules to /etc/modules: ppp_mppe ip_gre to have it loaded, and reboot. 2) Install pptpd apt-get install pptpd 3) in /etc/pptpd.conf, have the following: option /etc/ppp/options.pptpd speed 115200 localip 10.1.1.10 #our eth0 remoteip 10.1.1.228-238 #our ip stack listen xx.xx.xx.250 #our eth1 4) change /etc/ppp/options to the following: lock noauth refuse-eap refuse-chap refuse-mschap nobsdcomp nodeflate require-mppe-128 5) in /etc/ppp/pap-secrets, don't forget to add the blank user and password * * 4) use the following settings in /etc/ppp/options.pptp: lock name pptpd proxyarp asyncmap 0 -chap -mschap +mschap-v2 require-mppe lcp-echo-failure 30 lcp-echo-interval 5 ipcp-accept-local ipcp-accept-remote This setup will work with any Windows 2000/XP client, and all pptp configs on Linuxes. (with regards to http://poptop.sourceforge.net/dox/radius_mysql.html) Enjoy ;)