Modbus, DNP3, IEC 104, IEC 61850 and OPC UA Network and infrastructure penetration testing skills, including segmentation testing and review of switch, router and firewall configuration Strong network protocol analysis using tools such as Wireshark Excellent ability to learn new technologies, systems and languages Ability to script in appropriate languages … Working in live ICS environments using a risk-averse methodology, using document review, visual survey and low-risk techniques to find security issues Reviewing firewall rule bases and management platform configuration across a substation estate Testing network segmentation and infrastructure on a variety of ships, including cruise ships ...