The NetVault Backup Administrators guide is currently incorrect, page 55.
DR Series System prerequisites:
Configure ports for replication: To perform replication operations across a firewall, configure the following fixed TCP ports on the DR Series system to support replication operations:
Port 9904
Port 9911
Port 9915
Port 9916
Resolution:
1. RDA replication correct ports (10011,11000, and 9920)
2. For CIFS replication, ports (9915-9916)