Ports Configuration File Configuration Considerations

Configuring Arcserve Backup › Configuring Firewalls to Optimize Communication › Ports Used by Arcserve Backup Components › Additional Resources - Firewall Ports Specifications › Ports Configuration File Configuration Considerations

Ports Configuration File Configuration Considerations

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

When 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.
Circumstances may arise when you want to specify a custom port or a range of ports for NAS filer to server backups. For example, there is a firewall between the backup server and the NAS filer. To specify custom ports, do the following:
1. Log in to the backup server and open the following ports configuration files:
  Windows x64 operating systems
```
C:\Program Files (x86)\CA\SharedComponents\ARCserve Backup\PortsConfig.cfg
```
  and
```
C:\Program Files\CA\SharedComponents\ARCserve Backup\PortsConfig.cfg
```
  Windows x86 operating systems
```
C:\Program Files\CA\SharedComponents\ARCserve Backup\PortsConfig.cfg
```
2. Set ENABLE_CONFIGURABLE_PORTS=1
3. Add filertoserver 10000;10001-10005
4. Close and save the ports configuration files.
5. Restart all Arcserve Backup services on the backup server using the cstop.bat and cstart.bat batch files.
6. Repeat Steps 1 through 5 on all primary and member servers.
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 that will be used during the backup. Use the reconnection key on the Arcserve Backup server side.
If you are using CA eTrust 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 the ncacn_ip_tcp and ncacn_np protocols. When using ncacn_ip_tcp, open the tcp ports (6502, 6503, and 6504) and open the system ports 137-139, 445 which are used by the Windows operating system when the 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 that are installed on the same machine (for example, the Arcserve Backup Client Agent, the Arcserve Backup Agent for Microsoft Exchange Server, and the Arcserve Backup NDMP NAS Option). If you add a machine with a Windows XP or Windows Server 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 lets you browse 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	IPAddress	tcpport	udpport
```
The above-described CAPortConfig.cfg settings migrate to PortsConfig.cfg in the following format:
```
fsbackupservice		tcpport	machinename	IPAddress
```
```
fsbackupserviceudp	udpport	machinename 	IPAddress
```
```
fsbackupserviceunix  	tcpport 	machinename 	IPAddress 
```

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