Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1986-2001 Microsoft Corp. C:\WINDOWS>netsh ras show authtype ?
show authtype
Displays the authentication type(s) currently enabled.
NETSH / RAS / SHOW / AUTHTYPE
netsh ras show authtype - Windows 2000/XP - commandDisplays the authentication types currently enabled. / Windows 2000/XP netsh, ras, show, authtype, cmd, command, Windows, 2000/XP