Usm User table

A Usm user is available in the nSnmp module. The Usm user is a row of the UsmUserTable. The Usm user row contains an object for each element that is represented in the UsmUserTable.

Figure 29. Usm User Table Properties

To access this view, expand Config > Drivers > SnmpNetwork > Local Device, right-click UsmUserTable > Views > AX Property Sheet.

Property	Value	Description
IP Address	text	Reports the IP address of the device.
Security Level	drop-down list	The security level value in this field restricts or allows access and notifications as described below: `No Auth No Priv`: This option specifies communication without authentication or privacy. When you select this level, it is not necessary to enter any authentication or privacy inputs. A User with security level No Auth No Priv and context name as noAuth is called noAuthUser. `Auth No Priv`: This option represents the communication with authentication and without privacy. You have to select the applicable Authentication Protocol and enter an Authentication Passphrase in the UsmUserTable. The protocols used for Authentication is SHA (Secure Hash Algorithm). Users with security level Auth No Priv and context name as auth is called as authUser. `Auth Priv`: This option represents the communication with authentication and privacy. User has to select the SHA Authentication Protocol for authentication and enter an Authentication Passphrase. Also select the DES (Data Encryption Standard) and AES (Advanced Encryption Standard) Privacy Protocol for privacy and enter a Privacy Passphrase in UsmUserTable. Users with security level Auth Priv and context name as priv is called as privUser.
Authentication Protocol	drop-down list	This property allows you to select the Authentication Protocol HMAC-SHA-96. It is used to check the integrity and to authenticate the SNMPv3 message sent on the behalf of this user.
Authentication Passphrase	text	This property allows user to set the passphrase. This is not applicable for No Auth No Priv security level.
Privacy Protocol	drop-down list	This property allows user to select privacy protocol DES, Aes128, Aes192 or Aes256 to protect the SNMPv3 message from disclosure. This is not applicable for No Auth No Priv and Auth No Priv security levels.
Privacy Passphrase	text	This property allows user to set the passphrase. This is not applicable for No Auth No Priv and Auth No Priv security levels.
Context Name	text	This property represents the Context Name. The Context Name specifies where the desired management object is to be found. The Context Name of the UsmUserTable must match with the entry in VacmContextTable.

Usm User table

Figure 29. Usm User Table Properties

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