cisco certification sign up

cisco certification sign up.Federated SSO (SSO) extends the SSO concept to systems that belong to multiple units. Users can authenticate with the SSO server in unit A, and their "proof of identity" can be authenticated in the system in unit B.SAML, OAuth, and OpenlD Connect are well-known frameworks for implementing federated SSO. KerberosKerberos is a well-known authentication protocol with single sign-on capabilities. The protocol was proposed by MIT, and the current version (v5) of Kerberos is defined in RFC4l20o The following are the main entities or objects involved in the Kerberos protocol.KeyDistributionServer (KDC): is the main component of the Kerberos system and contains three components: AuthenticationServer (AS), which provides the initial authentication ticket; Ticket. Granting Ticket (TGT), also known as a service ticket; and the Kerberos database, which contains all information related to the user, host, and server (principal).Protagonist (principal): A client or server entity that participates in the Kerberos realm.ticket (ticket): An identity record that is used to prove the identity of a client when the client authenticates itself to the server. In order to use a ticket, the authenticator needs to "cooperate".authenticator: used to further authenticate the identity and reduce the probability of replay attacks. Authenticator messages will contain information about the protagonist and the session key.domain (realm): used to identify the authentication and authorization domains within which the authentication service is entitled to provide its own services. If a trust relationship exists between domains, the protagonist can be authenticated outside the domain. This is called cross-realm authentication oAccording to the basic implementation of Kerberos, when a protagonist (e.g., a user) requests access to another protagonist (e.g., a server), it will send a request (AS_REQ) message to the authentication server (AS) indicating that it wants to access the server, and the message will contain the user's identifier and the server's identifier. The AS checks that both the user and the server are in the Kerberos database before generating a session key and creating a response (AS_RES) message that contains the ticket granting ticket (TGT)OAt this point, the client principal is ready to send a request (TGS_REQ) message to the TGS to obtain a session ticket. This request message will contain the TGT and the authenticator. The TGS verifies that the principal server is in the Kerberos database, issues a service ticket, and then sends it to the user principal along with an answer (TGS_REP) message, which also contains the session key. The user protagonist can now issue a request to access the server protagonist (AP_REQ) message, which will contain the service ticket and, based on the new session