By default, telnet, RIPv1, rsh, and webdav are enabled. If these services are not required in your infrastructure, NetApp recommends that they be disabled.
Disable telnet access or limit it to only known, trusted hosts
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system NetApp.