Kerberos is an network authentication protocol designed to provide strong mutual authentication for client/server applications by using secret-key cryptography.

Resources:

• MIT Kerberos implementation [1]
• GNU Kerberos implementation (Shishi) [2]
• Wikipedia [3]
• comp.protocols.kerberos FAQ [4]

JKU TWAPI can work with Kerberos. See SASL and TWAPI.

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