Daemon Connection Port

The Daemon Connection Port setting determines which of the following methods will be used when connecting to the server:

• Automatic

The daemons on the server will be connected to using vnetd if possible. If using vnetd is not possible, the connection will be made using the daemon's traditional port number. (Automatic is the default.)

• VNETD Only

The daemons on the server will be connected to using vnetd only. If your firewall rules prevent connecting to the server using the traditional port number, check this option.

• Daemon Port Only

The daemons on the server will be connected to using only the traditional port number. If the server is running NetBackup software earlier than NetBackup 4.5 with the feature pack 3, use this option.

Media Server Running bpbrm and Client Running bpcd



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Using the traditional call-back method, bpbrm is not actively listening on a port for a specific connection from bpcd. Because bpcd could connect back to the media server on one of many ports, firewall administrators must make more ports available on the firewall to accommodate that communication.

Traditional Call-back Method

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The no call-back method uses vnetd. Vnetd uses the well-known port 13724 to actively listen for a specific connection from another NetBackup process. If a firewall is in place, administrators need only to leave port 13724 open. Vnetd will transfer a socket from itself to another process on the same machine.

No Call-back Method Using vnetd

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