Code Field Name Description
Negotiate SecurityPackages C:\Windows\system32\lsasrv.dll Negotiate between Kerberos and NTLM.
NegoExtender SecurityPackages C:\Windows\system32\negoexts.DLL Extension to negotiate with additional SSPs.
Kerberos SecurityPackages C:\Windows\system32\kerberos.DLL Kerberos v5 implementation.
NTLM SecurityPackages C:\Windows\system32\msv1_0.DLL NTLM implementation.
TSSSP SecurityPackages C:\Windows\system32\tspkg.DLL Implements CredSSP (SSO for TerminalServices & RDP).
pku2u SecurityPackages C:\Windows\system32\pku2u.DLL Implements P2P authentication (e.g. homegroups).
CloudAP SecurityPackages C:\Windows\system32\cloudAP.DLL Implements Azure cloud authentication.
WDigest SecurityPackages C:\Windows\system32\wdigest.DLL Implements digest authentication (HTTP, LDAP, ...).
Schannel SecurityPackages C:\Windows\system32\schannel.DLL Implements TLS (including SSL & PCT which are considered obsolete).
Microsoft Unified Security Protocol Provider SecurityPackages C:\Windows\system32\schannel.DLL

More Information

Active Directory Access Codes and Rights AttributeSyntaxOID File System Objects Access Rights ImpersonationLevel Integrity Level Labels for Groups and Accounts Internet Protocol Numbers Kerberos Encryption Types Logon Rights LogonType Mandatory / Integrity Label Netlogon Error Codes Object Types PreAuthType Privileges SecurityPackages TGT/TGS Issue Error Codes Well-known Security Identifiers (SIDs) Windows