Network Monitoring System Gutor Modular DC – User Guide PDF
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SNMPv3 Access

SNMPv3 uses user profiles to define what IP addresses on the network has access to the SNMP communication from the NMC. The settings for SNMPv3 can be configured from the CLI or the web interface.

SNMPv3 User Profiles

To use SNMPv3 a user profile needs to be defined. Each user profile has a user name, authentication setting and encryption setting. It is possible to defined up to four different user profiles.

  • The user name: Used to identify the user profile. SNMPv3 checks that the user name is the same in the user profile and the data package being transmitted. The maximum length of a user name is 32 ASCII characters.

  • Authentication passphrase: Provides the SNMPv3 communication with authentication. Checks that the NMS that communicates with the device is the NMS it claims to be. The authentication passphrase verifies that the message has not been changed during transmission. It also verifies that the transmission was not delayed, copied and then sent again. The length of a passphrase can be between 15-32 ASCII characters.

  • Privacy passphrase: Provides the SNMPv3 communication with encryption. Ensures the privacy of the data sent with to and from an NMS. The length of a privacy passphrase can be between 15-32 ASCII characters.

  • Authentication protocol: Use either SHA or MD5 as an authentication protocol.

  • Privacy protocol: Use either AES or DES as a privacy protocol. For encryption of the SNMPv3 requests it is required to use both an authentication and a privacy protocol. To set a privacy protocol an authentication protocol must be selected.

Configure SNMPv3 from the CLI

  1. Log in to the CLI.

  2. To see the configuration options type snmpV3 ?.

    NOTE: In the table [n] is the user name number 1, 2, 3 or 4.
    Setting Command Argument Description
    Help ? Shows the command help.
    SNMPv3 access –s enable | disable Enables or disables SNMP version 3.
    User name –u[n] <User Name> Set a user name.
    Authentication phrase –a[n] <Authentication Phrase> Set an authentication phrase.
    Encryption phrase –c[n] <Crypt Phrase> Set an encryption phrase.
    Authentication protocol –ap[n] sha | md5 | none Set the type of authentication protocol.
    Privacy (encryption) protocol –pp[n] eas | des | none Set the privacy (encryption) protocol.
    Slave address –ac[n] enable | disable Enable or disable access.
    User access –au[n] <User Name> Give access to a user.
    Set IPv4/IPv6 address or host name –n[n] <IP address> | <Host Name> Set the IPv4/IPv6 address or the host name of the network management station.

Configure SNMPv3 from the Web Interface

  1. Log in to the web interface.

  2. Navigate to Configuration > Network > SNMPv3 > User Profile.

  3. Click on a user name to view the settings for it.

  4. Here it is possible to configure the User Name, Authentication Passphrase, Authentication Protocol, Privacy Passphrase and Privacy Protocol.

  5. Click Apply to save any changes.

    NOTE: Reboot the NMC to apply changes. From the web interface select Control > Network > Reset/Reboot for options.

  6. Navigate to Configuration > Network > SNMPv3 > Access Control.

  7. Click on a user name to view the settings for it.

  8. Here it is possible to enable Access and configure the NMS IP/Host Name for the selected User Name. Use the drop-down menu to change User Name to configure.

  9. Click Apply to save any changes.

    NOTE: Reboot the NMC to apply changes. From the web interface select Control > Network > Reset/Reboot for options.

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