Abstract: Embodiments of the present technology relate to a system for providing intrusion detection for industrial control systems, comprising serial data links to communicate with serial-based networks, Ethernet interfaces to communicate with industrial and enterprise networks, a protocol recognition engine to break down an incoming data packet by protocol and integrate the data into an Ethernet framework, an industrial control system recognition application to detect intrusions, a traffic analytics application to analyze traffic activity for abnormal traffic activity, a logfile creation application to poll industrial equipment and create a logfile of equipment statuses, a long term system deviation analysis application to monitor raw data of the industrial equipment to create a profile of long term system activity, a rule set to allow data that matches the rule set and flag data that does not match the rule set, and an alerts engine to alert a system administrator of suspect activity.