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Security Support Provider Interface (SSPI) is a component of Windows API that performs security-related operations such as authentication. SSPI functions as a common interface to several Security Support Providers (SSPs): [ 1 ] A Security Support Provider is a dynamic-link library (DLL) that makes one or more security packages available to apps.
NTLMSSP (NT LAN Manager (NTLM) Security Support Provider) is a binary messaging protocol used by the Microsoft Security Support Provider Interface (SSPI) to facilitate NTLM challenge-response authentication and to negotiate integrity and confidentiality options.
Integrated Windows Authentication (IWA) [1] is a term associated with Microsoft products that refers to the SPNEGO, Kerberos, and NTLMSSP authentication protocols with respect to SSPI functionality introduced with Microsoft Windows 2000 and included with later Windows NT-based operating systems.
May 1995: Windows NT 3.51 released, includes SSPI; June 1996: Kerberos mechanism for GSSAPI (RFC 1964) January 1997: GSSAPI version 2 (RFC 2078) October 1997: SASL published, includes GSSAPI mechanism (RFC 2222) January 2000: GSSAPI version 2 update 1 (RFC 2743, RFC 2744) August 2004: KITTEN working group meets to continue CAT activities
Integrated Windows Authentication is a term associated with Microsoft products and refers to the SPNEGO, Kerberos, and NTLMSSP authentication protocols with respect to SSPI functionality introduced with Microsoft Windows 2000 and included with later Windows NT-based operating systems.
The Native API is a lightweight application programming interface (API) used by Windows NT's kernel and user mode applications. This API is used in the early stages of Windows NT startup process, when other components and APIs are still unavailable.
After compromising a system, attackers often attempt to extract any stored credentials for further lateral movement through the network. A prime target is the LSASS process, which stores NTLM and Kerberos credentials.
The protocol exists in two versions, MS-CHAPv1 (defined in RFC 2433) and MS-CHAPv2 (defined in RFC 2759).MS-CHAPv2 was introduced with pptp3-fix that was included in Windows NT 4.0 SP4 and was added to Windows 98 in the "Windows 98 Dial-Up Networking Security Upgrade Release" [1] and Windows 95 in the "Dial Up Networking 1.3 Performance & Security Update for MS Windows 95" upgrade.