SNMPv2 SECURITY: WHAT HAPPENED? APRIL 1993: PROPOSED STANDARD FOUR EDITORS SECURITY BASED ON PARTIES FIRST PROTOTYPES APPEARED SOON JUNE 1995: PROPOSED.

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Presentation transcript:

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 : NEW SNMPv3 WORKING GROUP WAS FORMED WITH NEW EDITORS

SNMPv2 PROTOCOL OPERATIONS

GETBULK PERFORMANCE

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

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

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