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PEAP-EAP-TLS is very similar in operation to the original EAP-TLS but provides slightly more protection because portions of the client certificate that are unencrypted in EAP-TLS are encrypted in PEAP-EAP-TLS. Ultimately, PEAPv0/EAP-MSCHAPv2 is by far the most prevalent implementation of PEAP, due to the integration of PEAPv0 into Microsoft ...
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.
The Lightweight Extensible Authentication Protocol (LEAP) method was developed by Cisco Systems prior to the IEEE ratification of the 802.11i security standard. [3] Cisco distributed the protocol through the CCX (Cisco Certified Extensions) as part of getting 802.1X and dynamic WEP adoption into the industry in the absence of a standard.
The latest version is standardized in RFC 5247. The advantage of EAP is that it is only a general authentication framework for client-server authentication - the specific way of authentication is defined in its many versions called EAP-methods. More than 40 EAP-methods exist, the most common are: EAP-MD5; EAP-TLS; EAP-TTLS; EAP-FAST; EAP-PEAP
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.
EAP-AES128 for GSS EAP authentication [5] GateKeeper (& GateKeeperPassport) a challenge-response mechanism developed by Microsoft for MSN Chat OAUTHBEARER OAuth 2.0 bearer tokens (RFC 6750), communicated through TLS [6] OAUTH10A OAuth 1.0a message-authentication-code tokens (RFC 5849, Section 3.4.2) [6]
It's not really correct to say PEAPv0/EAP-MSCHAPv2 is a "form of PEAP". PEAP allows you to tunnel any EAP method inside the TLS channel that PEAP sets up in phase 1. While it's true that EAP-MSCHAPv2 is the common (default) setting used by Windows machines, PEAPv0 can be used just as well with EAP-TLS, EAP-MD5 or any other EAP method.
When the peer sends CHAP, the authentication server will receive it, and obtain the "known good" password from a database, and perform the CHAP calculations. If the resulting hashes match, then the user is deemed to be authenticated. If the hashes do not match, then the user's authentication attempt is rejected.