This topic describes the tables needed for User-based Security Model (USM) and View-based Access Control Model (VACM) configuration.
Add all tables under the Local Device of the controller (SNMP_AGENT station).
User-based Security Model (USM)
The USM is the default Security Module for SNMPv3. The U stands for User-based, as it contains a list of users and their attributes.
SNMPv3 defines a user-based security mechanism that enables per-message authentication and encryption.
View-based Access Control Model (VACM)
Use the VACM to find out whether access to a specified managed object is authorized. Access control is done at the following
points:
- When processing retrieval request messages from the Manager
- When processing modification request messages from the Manager
- When notification messages must be sent to the Manager.