When deploying a remote access VPN solution, you must consider the following planning and design issues:
Concurrent intranet and Internet access for VPN clients
VPN enforcement with NAP
Windows Server 2008 includes support for the following remote access VPN protocols:
PPTP. PPTP uses PPP user authentication and MPPE encryption. When Microsoft Challenge Handshake Authentication Protocol (MS-CHAP v2) or Protected EAP (PEAP)-MS-CHAP v2 is used with strong passwords, PPTP is a secure VPN technology. For certificate-based authentication, Extensible Authentication Protocol-Transport ...