About secure communications in NetBackup
NetBackup 8.1 hosts can communicate with each other only in secure mode.
Each host much establish trust with the CA, after which a CA certificate is added to the trust store. Each NetBackup 8.1 host must also have a host ID-based certificate in order to successfully communicate.
A host ID-based certificate is deployed on the host during NetBackup installation. If the certificate cannot be deployed during installation, the host cannot communicate with other hosts. In this case, you must manually deploy a host ID-based certificate on the host using the nbcertcmd command to start host communication after installation.
Note:
If you have any NetBackup 8.0 or earlier in your environment, you can enable insecure communication by navigating to the NetBackup Administration Console, then to the Security Management > Global Security > Secure Communication tab. On this tab, select the Enable insecure communication with NetBackup 8.0 and earlier hosts option.