ethernet ip , profinet , Role-based access control (RBAC), secure remote access , Opc, Routers, Firewalls, Antimalware, Patch deployment, IEC 61850, Industrial switches, Modbus TCP, Industrial network design, Active Directory, Cybersecurity controls, rtu, Port USB lockdown, profibus, Application whitelisting, Workstation hardening, IEC 62443, OPC UA, Backup restore