Virtual Private Networking
Windows Mobile supports Virtual Private Networking (VPN). The VPN support in Windows Mobile includes Layer Two Tunneling Protocol (L2TP)/IP Security Protocol (IPSec) and Point-to-Point Tunneling Protocol (PPTP). L2TP/IPSec enables enhanced security for virtual private network (VPN) client connections from Windows® phones to corporate servers. PPTP is a network protocol that adds a security infrastructure for the transfer of data from a remote client to a private enterprise server, thus creating a VPN by using TCP/IP-based data networks.