Patent ID: 7715819

Claim:
In a mobile platform, a security system for monitoring an onboard communication system communicating with a terrestrial-based system over an intermittent link, the security system comprising: an onboard communication network accessible for use by a plurality of users onboard the mobile platform; an intrusion detection system onboard the mobile platform for monitoring use of the onboard network for detecting if a potential intrusion event has occurred by one of the plurality of users onboard the mobile platform; and an onboard security management system responsive to the intrusion detection system for initiating an action to address the potential intrusion event, based on a set of security policies, the action able to be directed to at least a selected one of a plurality of user access points on the onboard network, the set of security policies defining the action as initiatable subject to an override of the action through the terrestrial-based system and as changeable, when the intermittent link makes communication with the terrestrial-based system unavailable, to restore a previous policy-defined state of the selected user access point; and the onboard security management system receives updates to said security policies from the terrestrial-based system when said intermittent link is operational; wherein the action includes one of: notifying a particular user on the onboard network that a suspected intrusion event has occurred; or blocking access by the particular user to the onboard network; the security system further provides a status indication as to a status of the onboard network.