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SNMPv2 SECURITY: WHAT HAPPENED?

SNMPv2 SECURITY: WHAT HAPPENED?. APRIL 1993: PROPOSED STANDARD FOUR EDITORS SECURITY BASED ON PARTIES FIRST PROTOTYPES APPEARED SOON JUNE 1995: PROPOSED STANDARD REJECTED BY TWO OF THE ORIGINAL EDITORS! AUGUST 1995: GENERAL AGREEMENT THAT PARTY BASED MODEL WAS TOO COMPLEX!

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SNMPv2 SECURITY: WHAT HAPPENED?

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  1. SNMPv2 SECURITY: WHAT HAPPENED? • APRIL 1993: • PROPOSED STANDARD • FOUR EDITORS • SECURITY BASED ON PARTIES • FIRST PROTOTYPES APPEARED SOON • JUNE 1995: • PROPOSED STANDARD REJECTED BY TWO OF THE ORIGINAL EDITORS! • AUGUST 1995: • GENERAL AGREEMENT THAT PARTY BASED MODEL WAS TOO COMPLEX! • MANY NEW PROPOSALS APPEARED: • • SNMPv2C: COMMUNITY BASED • • SNMPv2U: USER BASED • • ... • 1997: • NEW SNMPv3 WORKING GROUP WAS FORMED • WITH NEW EDITORS

  2. SNMPv2 PROTOCOL OPERATIONS

  3. GETBULK PERFORMANCE

  4. SET • SIMILAR TO SNMPv1 • CONCEPTUAL TWO PHASE COMMIT: • • PHASE 1: PERFORM VARIOUS CHECKS • • PHASE 2: PERFORM THE ACTUAL SET • MANY NEW ERROR CODES ARE DEFINED

  5. INFORM • CONFIRMED TRAP • ORIGINALLY TO INFORM A HIGHER LEVEL MANAGER • SAME FORMAT AS TRAP PDU • POSSIBLE ERROR: tooBig

  6. SNMPv2 - SUMMARY • IMPROVED COMMUNICATION MODEL • • TRAPS HAVE SAME FORMAT AS OTHER PDUS • • GET-BULK PDU • • ADDITIONAL ERROR CODES FOR SETS • TWO SECURITY MODELS • • SNMPv2C: COMMUNITY BASED • • SNMPv2U: USER BASED • INDEPENDENCE OF UNDERLYING TRANSPORT • • MIB-II SPLIT INTO MODULES • SECURITY AND HIERARCHIES TO SNMPv3 & DISMAN • IMPROVED INFORMATION MODEL (SMIv2) • • ADDITIONAL DATA TYPES • • TEXTUAL CONVENTIONS • E.G. ROW STATUS • • NOTIFICATIONS

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