1. A node, comprising: a separation kernel (SK) that defines at least one partition on the node, wherein the at least one partition on the node communicates data with one or more partitions on another node over one or more communication channels, a data communication with the at least one partition on the node over the one or more communication channels exhibiting at least one exhibited communication characteristic; and a communication controller that obscures the at least one exhibited communication characteristic to prevent an illicit flow of information from the at least one partition on the node to a partition on another node.