Configuring CA ARCserve Backup › Configuring Firewalls to Optimize Communication › Ports Configuration File Guidelines

Ports Configuration File Guidelines

The following guidelines apply to modifying the ports configuration file:

• Changing port numbers requires the CA ARCserve Backup ServiceName.

  Note: For more information about service names, see Additional Resources - Firewall Ports Specifications.

• 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 port is used.
• Microsoft Remote Procedure Call (MSRPC) services require only the CA ARCserve Backup service name (ServiceName). CA ARCserve Backup MSRPC-based services use system-assigned port numbers.
• You can use the key RPCServices for all Remote Procedure Call (RPC) services. This key lets CA ARCserve Backup use system-assigned ports for all CA ARCserve Backup RPC-based services.
• Changing the port configuration file on one CA ARCserve Backup server for MSRPC-based services does not ensure that CA ARCserve Backup applies the changes to all remote CA ARCserve Backup servers. You should modify the port configuration file on all remote CA ARCserve Backup servers.
• For TCP communication-based services, you can specify different port ranges for different host names with many IP addresses.
• You should specify an IP address only if a machine has more than one network interface card (NIC) and you want to use a specific NIC for TCP communication.

Note: For more information about specific Microsoft Windows system port requirements, see the Microsoft Support website.