Cambrian Works (CW) will address a defensive space approach that has been communicated by Space Force at SMC by developing a dual-mode, secure, standard interface small satellite communications subsystem that can operate in either optical or RF, or both simultaneously. The proposed subsystem will have a straightforward ethernet interface, for direct plug in operation with standard small satellite buses, such as larger CubeSats (e.g. 12U or 16U), or SmallSats. This communications subsystem will support in-space networking, and will provide secure communications with data rates of at least 1-Gbps in both optical and RF bands.