How communication with legacy media servers happens in the case of cloud configuration

If the Enable insecure communication with NetBackup 8.0 and earlier hosts option is disabled, NetBackup cannot communicate with legacy media servers that you use for cloud storage irrespective of the value of the CSSC_LEGACY_AUTH_ENABLED cloud configuration option.

The Enable insecure communication with NetBackup 8.0 and earlier hosts option is available in the NetBackup web UI on the Setting > Global Security > Secure Communication tab.