I want to use the dedicated MGMT port for connectivity to my syslog server.
Firmware v6.2.5.1
1. Enable the Out of Band Management on MGMT port option via System | Administration

NOTE - enabling this option requires a firewall reboot. Please arrange a suitable maintenance window.

2. Ensure your syslog server has an IP address in the same network as your MGMT interface. Check this under Network | Interfaces

3. Enter your syslog server details under Log | Syslog

Your syslog messages as configured in Log | Settings will now be sent to your syslog server via the MGMT port