The Circonus Enterprise Broker (CEB) resides in your infrastructure and collects monitoring data from systems within your network. If you use Circonus Inside, a CEB communicates with the Core Circonus Inside software. If you use Circonus SaaS, a connection from the outside to the CEB (via a single port) is used to pull the raw data back to Circonus. All communications between Circonus and the CEB are SSL-encrypted and are limited to port 43191.
The Circonus Enterprise Broker can run on RHEL5/6, CentOS 5/6, SmartOS, and OmniOS. We at Circonus, and a variety of our customers, run Brokers in a dedicated VM, or on physical HW with a minimum of 1GB of RAM and 20GB of local storage.