Implementing Arcserve Backup › Configuring Arcserve Backup › Configuring Firewalls to Optimize Communication › Ports Used by Arcserve Backup Components › Additional Resources - Firewall Ports Specifications › Examples of How You Can Modify the Ports Configuration File

Examples of How You Can Modify the Ports Configuration File

This section describes examples of modifying the PortsConfig.cfg file.

• Transmission Control Protocol (TCP), User Datagram Protocol (UDP), and Open Network Computing Remote Procedure Call (ONCRPC) services require only one port. If you do not provide a port number for these services, the default, hard-coded port is used. If you specify a port range, only the first available port from the range is used. The following examples show how to change a TCP service:

  sqlagenttcpservice		8000	machine_name
  fsbackupservice		7000  	machine_name
  

• Machines A and D are Arcserve Backup servers, machines B and C are Client Agent machines, and you want to change the communication port between machine A and B to 7000. Also, on machine A, there is a client agent installed for the Arcserve Backup server on machine D, and you want to change the communication port from D to A to 8000.

  On machine B (Client Agent), modify the PortsConfig.cfg file to contain the following entries:

  ENABLE_CONFIGURABLE_PORTS = 1
  fsbackupservice 		7000	MachineB
  fsbackupserviceudp		7000  	MachineB
  

  Be aware of the following:

  • You can perform this change using the Network Configuration application that is installed with the Backup Agent Admin.

    Note: For more information, see the Client Agents Guide.

  • You must restart the Universal Agent service.

  To allow machine A to browse and back up files on machine B, modify the Portsconfig.cfg file on machine A to contain the following entries:

  ENABLE_CONFIGURABLE_PORTS = 1
  fsbackupservice 		7000   MachineB   
  fsbackupserviceudp		7000   MachineB 
  

  Note: To apply this configuration, you must stop and restart all services on machine A using the cstop/cstart commands.

  To allow the client agent from machine A to communicate with Arcserve Backup machine D, modify the PortsConfig.cfg file on machine A and machine D to contain the following entries:

  ENABLE_CONFIGURABLE_PORTS = 1
  fsbackupservice		8000	MachineA   
  fsbackupserviceudp		8000	MachineA
  

  Be aware of the following:

  • You must restart the Universal Agent on machine A.
  • You must restart all Arcserve Backup services on machine D using the cstop and cstart commands.

  Note: You can apply this logic to the Arcserve Backup Agent for Microsoft SQL Server (sqlagenttcpservice) for TCP-based services (fsbackupservice, sqlagenttcpservice).

• For Arcserve Backup MSRPC services, the following occurs:

  MSRPC listens over ncacn_ip_tcp and ncacn_np protocols. The ncacn_ip_tcp uses system assigned ports by default rather than hard-coded ports. The hostname and IP address are not required for the RPC Services.

  For example, the following could be a change for an MSRPC service:

  dbagentsrpcserver			9000
  

  This setting means that the Arcserve Backup Agent RPC Server will try to use port 9000.

  dbagentsrpcserver			9000;9001
  

  This setting means that the Arcserve Backup Agent RPC Server will try to communicate using port 9000. If it does not succeed, it will try to use port 9001. If it does not succeed Arcserve Backup will write a message in the Windows Application Activity Log.

  dbagentsrpcserver			9000-9500
  

  This setting means that the Arcserve Backup Agent RPC Server tries to communicate using port 9000. If it does not succeed Arcserve Backup will try to communicate using port 9001, and continue to trying to communicate up to port 9500.

  If it cannot use any port in the range, will write a message in the Windows Application Activity Log.