Abstract: Disclosed is a Security Indications and Warning (SI&W) Engine usable in conjunction with an audit agent. The audit agent forwards normalized audits to the SI&W Engine. The SI&W Engine groups the normalized audits into related groupings. Gauges are used to count the number of occurrences of audited events. A statistical engine provides statistical representations of the number of events per user, per session and per node. A predetermined number of criteria are defined a particular gauge or gauge pair. There may be many criteria for a particular network. When a predetermined number of criteria within a criteria set are triggered, an indicator is triggered. More complex indicators can use combinations of lower level indicators to provide further indications of potential security threads. Thus, a hierarchical system of gauges, criteria and indicators is used to measure boundary violations and breaches of different barriers.

Abstract: An antenna assembly for forming and directing a transmit beam, and for controlling receive and transmit beam tracking of a spacecraft in the presence of planetary aberration. The assembly includes a main reflector, a sub-reflector centered along an optical axis of the main reflector, and a moveable transmit feed for directing electromagnetic radiation along a longitudinal axis thereof. The assembly also includes an intermediate beam waveguide assembly arranged between the moveable transmit feed and the main reflector, wherein the intermediate beam waveguide assembly includes fixed and moveable optical components for guiding electromagnetic beam energy between the moveable transmit feed and the main reflector. A beam steering mechanism is coupled with the moveable transmit feed for angularly displacing the transmit beam from the optical axis by displacing the moveable transmit feed in a direction substantially orthogonal to the longitudinal axis of the transmit feed.