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Explain the difference between v1, v2c and v3 Traps PDU/format.
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Performance and security limitations. SNMPv3 focuses on improving the security aspect. Implements SNMP v1 and v2 specifications along with proposed new features. The "EngineID" Identifier in SNMPv3 uniquely identifies each SNMP entity.
In SNMPv3, the concept of an authentication service is expanded to include other services, such as privacy. The SNMPv1 framework introduces access control based on a concept called an SNMP MIB view. The SNMPv3 framework specifies a fundamentally similar concept called view-based access control.
Designed in 1993, SNMPv2c (where c stands for community) is a sub-version of SNMPv2. The Get, GetNext, and Set operations used in SNMPv1 are identical as those used in SNMPv2c. However, SNMPv2c's key advantage over previous versions is the Inform command.
In the case of all versions of SNMP, the term "Trap" is used to define a one-way message from a device (Agent) to a central master station (Manager). SNMPv3 is the newest version of SNMP. Its primary benefit is better security via encrypted protocol messages.
This requires you to go through the RFC documents, which means this is not programming related, and probably belongs to ServerFault.
Give you some hints:
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