Required firewall ports
If your NAS server is behind a firewall, open the following ports for NetBackup access.
For bi-directional NFS access:
TCP port: 2049 (NFS v4)
TCP port: 111 (NFS v2/v3)
For bi-directional SMB access:
TCP port: 445
Ransomware attackers specifically target and attempt to destroy backup systems to increase the probability of payment. Hardening your system is critical. Please ensure you have reviewed your platform security using the Security Hardening Checklist