telecom • networking • design

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LDAP sequence diagram with Kerberos authentication

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The LDAP sequence diagram describes authenticated LDAP directory lookup. The steps covered are:

  1. TCP connection establishment with the LDAP server
  2. Initial interaction to list the available services.
  3. Authenticate with the Kerberos server and obtain a ticket to proceed with the authentication with the LDAP server.
  4. Armed with the Kerberos ticket, the LDAP client uses bind to authenticate and initiate a secure connection.
  5. Encrypted LDAP communication follows.

The LDAP message flow is presented as a context diagram as well.

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