Microsoft Windows [Version 6.1.7000] (C) Copyright 2009 Microsoft Corp. C:\Windows>netsh ras delete authtype ?
delete authtype [type = ] PAP|MD5CHAP|MSCHAPv2|EAP|CERT
Deletes an authentication type from the list of types that the
Remote Access server will negotiate.
type - the type
PAP - Password Authentication Protocol (clear text).
MD5CHAP - Challenge Handshake Authentication Protocol using
Message Digest 5 hashing scheme to encrypt the response.
MSCHAPv2 - Version 2 of MSCHAP.
EAP - Extensible Authentication Protocol.
CERT - Certificate Authentication for IKEv2.
