I run a VPN using PPTP. I heard its not that secure because it sends the user name and password in plain text during the authentication. The VPN connects to a 2003 server with running AD. There is an option for authentication in IAS. I have choosen MS-Chapv2. The question is: Does the vpn authenticate itself still in plain text then use Ms-Chapv2 to authenticate itself to the server or use Ms-Chapv2 to authenticate onto the VPN?