Implementing Arcserve Backup › Configuring 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 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 Arcserve Backup service name (ServiceName). 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 Arcserve Backup use system-assigned ports for all Arcserve Backup RPC-based services.
• Changing the port configuration file on one Arcserve Backup server for MSRPC-based services does not ensure that Arcserve Backup applies the changes to all remote Arcserve Backup servers. You should modify the port configuration file on all remote 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.