Kerberos

Terms

authentication

authentication server

Kerberos

Kerberos realm

Propagating cipher block chaining (PCBC) mode

Public-key certificate

Realm

Sequence number

Subkey

Ticket

Ticket-granting server (TGS)

X.509 Certificate

Review Questions

14.1 What problem was Kerberos designed to address?

14.2 What are three threats associated with user authentication over a network or Internet?

14.3 List three approaches to secure user authentication in a distribted environment.

14.4 What four requirements were defined for Kerberos?

14.5 What entities constitute a full-service Kerberos environment?

14.6 In the context of Kerberos, what is a realm?

14.7 What are the principal differences between version 4 and version 5 of Kerberos?

14.8 What is the purpose of the X.509 standard?

14.9 What is a chain of certificates?

14.10 How is an X.509 certificate revoked?