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APPENDIX B: BOXILLA AND TX/RX PROTOCOLS
OVERVIEW
Emerald or InvisaPC uses standard IP protocols for communication between Receivers and Transmitters. Port 3389 is used for
unicast communications.
For management purposes, some other ports are used. The Black Box Discovery protocol uses UDP Multicast Group 224.0.1.249
(port 39150). This is sent by the Manager to discover Emerald or InvisaPC devices in the network. The router must allow UDP
Multicast forwarding to allow devices on a subnet different than where the Manager is located to be discovered.
Emerald or InvisaPC devices respond to the discovery multicast by sending a UDP unicast back to the Manager IP address on the
same port (Port 39150).
Once an Emerald or InvisaPC device is part of the managed domain, the Manager periodically “audits” the device to determine
information such as is the device on-line, who is logged into device, device statistics, etc. These audit requests and responses are
unicast UDP to specific IP addresses (responses are sent back to Manager’s IP address) on port 39150.
On power-up, a Transmitter sends out a “here I am” multicast message on multicast group 225.0.0.37 on port 12345.
Boxilla periodically retrieves device statistics using Port 8888.
Also port 22 and port 443 are used for some manager to appliances communications.
Port 8000 is also used for communications.
