Detection and Blocking of Replay, False Command, and False Access Injection Commands in SCADA Systems with Modbus Protocol

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">System</td><td class="align_center">Make and model</td><td class="align_center">Specifications</td><td class="align_center">IP address</td><td class="align_center">Other information</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">SCADA HMI</td><td class="align_center">HP Z420</td><td class="align_center">8 GB RAM with Intel processor</td><td class="align_center">192.168.1.1</td><td class="align_center">Schneider Vijeo Citect SCADA HMI package was loaded in this system</td></tr><tr><td class="align_left" colspan="5"><hr/></td></tr><tr><td class="align_left">PLC</td><td class="align_center">Schneider make</td><td class="align_center">M340 model</td><td class="align_center">192.168.1.10</td><td class="align_center">PLC logic was written using programming software, Unity Pro</td></tr><tr><td class="align_left" colspan="5"><hr/></td></tr><tr><td class="align_left">Attacker’s PC, web server, and gateway PC</td><td class="align_center">HP Z420</td><td class="align_center">4 GB RAM with Intel processor</td><td class="align_center">192.168.1.3</td><td class="align_center">Modbus simulator was loaded</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Security and Communication Networks

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Table 2

Table 2: Detection and Blocking of Replay, False Command, and False Access Injection Commands in SCADA Systems with Modbus Protocol 