Port Configuration - File Considerations

When modifying the PortsConfig.cfg file, consider the following scenarios:

• If you want to change the Network Attached Storage (NAS) port on the Arcserve Backup server, after installing the Arcserve Backup NDMP NAS Option, you must change the port assignment on the NAS filer as well.
• The reconnection logic is implemented to avoid an existing network problem. This can occur when you perform client agent backups over the network. During the backup, the connection can be lost and the backup fails. If this occurs, you can specify the reconnection key and a port range which will be used during the backup. Use the reconnection key on the Arcserve Backup server side.
• If you are using Arcserve Firewall software, you should perform the following steps:
  • From the command prompt, access the following:

    	Program Files\CA\eTrust\Firewall\Engine
    

  • Enter the following command:

    	fwadmin -msrpc_chk_states_off
    

• For remote computer management, Arcserve Backup RPC services listen using “ncacn_ip_tcp” and “ncacn_np” protocols. For remote management of a computer, and browsing the database agents, total block is required. You should block communication on the “ncacn_ip_tcp” ports (6502,6503,6504), but also on the system ports 137-139,445, which are used by the Windows operating system in the event “ncacn_np” protocol is used.

  Note: If eTrust Firewall blocks RPC communication, Arcserve Backup can respond slowly, or stop responding completely.

• To change the port for the Universal Agent, you must change the communication port for all agents and options that use this service installed on the same machine (for example, the Arcserve Backup Client Agent, the Arcserve Backup Agent for Microsoft Exchange Premium Add-on, and the Arcserve Backup NDMP NAS Option). If you add a machine with a Windows NT, Windows XP, or Windows 2003 operating system, browsing functionality is performed through the Universal Agent.
• Changing the ports for the Arcserve Backup Agent for Microsoft Exchange Server and the Arcserve Backup Agent for Microsoft SQL Server is for TCP backups for these agents. The RPC server provides browsing capabilities for all Arcserve Backup for Windows database agents.
• If you are upgrading from an older version of Arcserve Backup, and your current installation uses a configuration file labeled CAPortConfig.cfg for Arcserve Backup Client Agents configurations, the installation process migrates CAPortConfig.cfg settings to the PortsConfig.cfg file.

  For previous Arcserve Backup installations, information in the CAPortConfig.cfg file is in the following format:

  MachineName	IPAdress		tcpport	udpport
  

  The above-described CAPortConfig.cfg settings migrate to PortsConfig.cfg in the following format:

  fsbackupservice		tcpport	machinename	IPAddress 
  

  fsbackupserviceudp		udpport	machinename	IPAddress
  

Note: For more information about requirements for Microsoft Windows system services ports, see the Microsoft Support website.

More information:

Port Configuration - Additional Resources

Modify Ports Configuration File

Port Configuration - Modification Examples