The LanDataSecure™ system offers the only complete single-mode system approved by the United States Air Force for the protection of the Physical Distribution System (PDS). When receiving an intrusion alarm, a signal is generated to the local HUB interface and automatically disconnects the compromised LAN, preventing the flow of information. Upon completion of the alarm response and investigation, reconnection of communications is restored via an operator command from the security management station. In addition to alarm monitoring functions, the Security Management Station contains fully integrated access control and video assessment capabilities that may be utilized, if desired.