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9. IANA Considerations

Overview​

This section addresses Internet Assigned Numbers Authority (IANA) registrations and considerations for the Kerberos protocol.

Registered Values​

Port Assignments​

  • UDP port 88: Kerberos
  • TCP port 88: Kerberos
  • Registered with IANA

Protocol Numbers​

Various Kerberos-specific identifiers registered including:

  • Encryption type numbers
  • Checksum type numbers
  • Pre-authentication type numbers
  • Authorization data type numbers
  • Name type numbers
  • Error code numbers

Registration Procedures​

New Registrations​

  • Process for registering new values
  • Documentation requirements
  • Review procedures
  • Expert review needed

Existing Registries​

  • Encryption types (RFC 3961)
  • Checksum types (RFC 3961)
  • PreAuthentication data types
  • Authorization data types
  • Other protocol constants

Expert Review​

  • Designated experts for protocol extensions
  • Review criteria for new registrations
  • Compatibility considerations
  • Security review requirements

Documentation Requirements​

New registrations must include:

  • Clear specification
  • Security analysis
  • Interoperability considerations
  • Reference implementation considerations

Reference​

For complete IANA considerations, refer to RFC 4120 Section 9.

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