Computer Associates BABWBR1151S38 Implementation Guide - Page 231

Configuring Firewalls to Optimize Communication Port 53 This port allows Windows computers to reach each other using Domain Name Server (DNS) communication. CA ARCserve Backup uses port 53 to enable name resolution, which allows primary servers, stand-alone servers, member servers, and agent servers to communicate with each other. You can find Microsoft Windows System port requirements at the following URL: http://support.microsoft.com/kb/832017/en-us Ports Used by the CA ARCserve Backup Base Product For the CA ARCserve Backup base product, you can configure the following ports in the PortsConfig.cfg file: CA Remote Procedure Call service This is the ONCRPC portmapper service. Other ONCRPC services such as caserved, cadiscovd, caathd, lqserver, camediad, and idbserver use this service for registration. Clients that communicate using the other ONCRPC services first contact the ONCRPC portmapper service to enumerate the ports, and then contact the other ONCRPC service to communicate. ■ Default Port: 111 ■ Protocol: TCP Domain service (Cadiscovd.exe) This service maintains a database of users, passwords, equivalences, and hosts for the CA ARCserve Backup domain concept. This service is required for GUI communication. ■ Default Port: Dynamic Port ■ Protocol: TCP Service controller (Caserved.exe) This service is used to manage other services remotely and is required for GUI communication. ■ Default Port: Dynamic Port ■ Protocol: TCP Authentication service (Caauthd.exe) This service validates the caroot user login and equivalence. It is required for GUI and backup server communication. ■ Default Port: Dynamic Port ■ Protocol: TCP Chapter 7: Configuring CA ARCserve Backup 231