Question: what are the principal differences between version 4 and version 5 of kerberos?
Answer: Kerberos Version 5 uses the entire principal name. Kerberos version 4 uses DES encryption techniques. In Kerberos version 5, the cipher text is tagged with an encryption type identifier and therefore any type of encryption can be used. Kerberos version 4 uses the “receiver-makes-right” encoding system.