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
Cohesity

COHESITY Documentation

Explore our documentation to get started, discover products & new features, access troubleshooting guides, register sources, platforms support.

Products
Data Security Alliance
Visit Cohesity.com
Demos
Support
Blogs
Developers
Partner Portals
Cohesity Community
© 2026 Cohesity, Inc. All Rights Reserved.
Terms of Use|
Privacy Policy|
Legal|
  1. Home
  2. Veritas NetBackup™ Cloud Administrator's Guide
  3. Operational notes
  4. Enabling or disabling communication between master server and legacy cloud storage media servers
Veritas NetBackup™ Cloud Administrator's Guide

Enabling or disabling communication between master server and legacy cloud storage media servers

This is applicable for media server version 7.7.x to 8.1.2 only.

The NetBackup CloudStore Service Container (nbcssc) service that runs on older cloud storage media servers uses port 5637 to communicate with the master server. Starting with release 8.2, nbcssc service is no longer deployed. The NetBackup Web Management Console (nbwmc) and the NetBackup Service Layer (nbsl) services now handle that functionality.

Even when you upgrade your master server to 8.2 or later, the legacy cloud storage media servers continue to use the legacy cloud service for communicating with the master server. The NetBackup 8.2 master server, however, does support legacy cloud storage media servers. To allow communication between an 8.2 master server and the older media servers, you have to open port 5637 on the master server.

To enable nbwmc service communication on port 5637

  1. Run the following command on the master server:

    UNIX:

    # usr/openv/wmc/bin/install/configurePorts -addLegacyCloudService

    Windows:

    <install_path>\NetBackup\wmc\bin\install\configurePorts -addLegacyCloudService

  2. Restart the nbwmc service for the changes to take effect.
  3. Run the following command to provision a hostname-based certificate for the media server:

    UNIX:

    # usr/openv/netbackup/bin/admincmd/bpnbaz -ProvisionCert <media_server>

    Windows:

    <install_path>\NetBackup\bin\admincmd\bpnbaz -ProvisionCert <media_server>

    In case of an appliance, run the following commands instead:

    UNIX:

    # usr/openv/netbackup/bin/bpnbat -AddMachine <appliance_hostname>

    Windows:

    <install_path>\NetBackup\bin\bpnbat -AddMachine <appliance_hostname>

  4. Restart the cloud storage services on the media server.

Even though older versions of media servers are supported, it is recommended that you upgrade such media servers to version 8.2 or later. After upgrading all the legacy media servers, you can disable nbwmc service usage on port 5637.

To disable nbwmc service communication on port 5637

  1. Run the following command on the master server:

    UNIX:

    # usr/openv/wmc/bin/install/configurePorts -removeLegacyCloudService

    Windows:

    <install_path>\NetBackup\wmc\bin\install\configurePorts -removeLegacyCloudService

  2. Restart the nbwmc service for the changes to take effect.

Feedback

Was this page helpful?
Previous

Using csconfig reinitialize to load updated cloud configuration settings

Next

Troubleshooting

Feedback

Was this page helpful?