Network Management Systems (NMS), Ipsec, Nat, Wireshark, Openvpn, Netflow, Firewalls, SNMP, Syslog, VPN tunnels, network segmentation, Cisco Industrial Ethernet IE switches and routers, Siemens RUGGEDCOM SCALANCE, Hirschmann, Acls, Phoenix Contact SWITCH series and security routers, OT IT boundary protection, Moxa managed switches and secure routers, industrial-grade switches