the most popular Framework for the pptp vpn is to pptpd + freeradius + mysql, but for open source vpn account management system is rare, almost zero, but those management system of charges were prohibitively high price, recently many users Vpn site in question is how to set up, especially the self-registration is very simple, nothing more than to use php to write a few lines of code on the line, I put an easy one for download. Continue reading →