Super-user access is required on Unix and Linux systems for running the following:
sm_server - Domain Manager, handling ICMP packets, SNMP trap receiving on default port 162
brstart - Broker on default port 426
sm_trapd - SNMP trap receiving on default port 162
A Domain Manager must bind to multiple low numbered (less than 1024) ports for listening for ICMP traffic. In addition, the default port for starting a Broker (426) and SNMP trap processing (162) are also low-numbered ports. Access to low-numbered ports requires root access on Unix and Linux systems.
You can also start a Domain Manager with root access and then open additional ports as a non-root user, if this is required. Running as non root on UNIX and Linux systems on page 82 provides additional information.