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AuthType Enumeration

The AuthType enumeration is used to specify the authentication method to use on a connection.

Namespace: System.DirectoryServices.Protocols
Assembly: System.DirectoryServices.Protocols (in system.directoryservices.protocols.dll)

public enum AuthType
public enum AuthType
public enum AuthType

 Member nameDescription
AnonymousIndicates that the connection should be made without passing credentials. The value is equal to 0. 
BasicIndicates that basic authentication should be used on the connection. The value is equal to 1. 
DigestIndicates that the Digest Access Authentication should be used on the connection. The value is equal to 4. 
DpaIndicates that Distributed Password Authentication (DPA) should be used on the connection. The value is equal to 6. 
ExternalIndicates an external method will be used to authenticate the connection. The value is equal to 8. 
KerberosIndicates that Kerberos authentication should be used on the connection. The value is equal to 9. 
MsnIndicates that it is authenticated by “Microsoft Network Authentication Service”. The value is equal to 7. 
NegotiateIndicates that Microsoft Negotiate authentication should be used on the connection. The value is equal to 2. 
NtlmIndicates that Windows NT Challenge/Response (NTLM) authentication should be used on the connection. The value is equal to 3. 
SicilyIndicates a negotiation mechanism (Sicily) will be used to choose MSN, DPA or NTLM. This should be used for LDAPv2 servers only. The value is equal to 5. 

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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