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Accessing the cluster by using the CLI (cluster administrators only)

You can access the cluster by using the serial console, SSH, Telnet, or RSH. These protocols enable you to access the cluster to run CLI commands.

  • Accessing the cluster by using the serial port
    You can access the cluster directly from a console that is attached to a node's serial port.
  • Accessing the cluster by using SSH
    You can issue SSH requests to the cluster to perform administrative tasks. SSH is enabled by default.
  • SSH login security
    Starting with ONTAP 9.5, you can view information about previous logins, unsuccessful attempts to log in, and changes to your privileges since your last successful login.
  • Enabling Telnet or RSH access to the cluster
    As a security best practice, Telnet and RSH are disabled in the predefined management firewall policy ( mgmt ). To enable the cluster to accept Telnet or RSH requests, you must create a new management firewall policy that has Telnet or RSH enabled, and then associate the new policy with the cluster management LIF.
  • Accessing the cluster by using Telnet
    You can issue Telnet requests to the cluster to perform administrative tasks. Telnet is disabled by default.
  • Accessing the cluster by using RSH
    You can issue RSH requests to the cluster to perform administrative tasks. RSH is not a secure protocol and is disabled by default.