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Kerberos (/ ˈ k ɜːr b ər ɒ s /) is a computer-network authentication protocol that works on the basis of tickets to allow nodes communicating over a non-secure network to prove their identity to one another in a secure manner.
Name A binary string that labels a security principal (i.e., user or service program) - see access control and identity.For example, Kerberos uses names like user@REALM for users and service/hostname@REALM for programs.
The client would encrypt the ticket (password) with the public key and send the result back to the server, which would decrypt and verify the ticket. The current SPICE protocol also allows for use of the SASL authentication protocol, thus enabling support for a wide range of admin configurable authentication mechanisms, in particular Kerberos.
SAML 2.0, OAuth 2.0, OpenID Connect, Kerberos Trustelem [87] Trustelem Commercial SAML 2.0, OpenID Connect, WS-Fed, OAuth 2.0, Integrated Windows Authentication, Kerberos, Active Directory, LDAP, FIDO U2F. USP Secure Entry Server [88] United Security Providers: Commercial
It is the default authentication method in Windows 2000 and later. The authentication process itself is much more complicated than in the previous protocols - Kerberos uses symmetric key cryptography, requires a trusted third party and can use public-key cryptography during certain phases of authentication if need be. [9] [10] [11]
CAS validates the client's authenticity, usually by checking a username and password against a database (such as Kerberos, LDAP or Active Directory). If the authentication succeeds, CAS returns the client to the application, passing along a service ticket. The application then validates the ticket by contacting CAS over a secure connection and ...
Some strong authentication protocols for web-based applications that are occasionally used include: Public key authentication (usually implemented with a HTTPS / SSL client certificate) using a client certificate. Kerberos or SPNEGO authentication, employed for example by Microsoft IIS running configured for Integrated Windows Authentication (IWA).
Featuring Secure Remote Password protocol (SRP) as specified in secsh-srp [7] [8] besides, public-key authentication. Kerberos is somewhat supported as well. [citation needed] Currently however for password verification only, not as a single sign-on (SSO) method. [citation needed] lsh was started from scratch and predates OpenSSH. [9]