Level 0 — Fundamentals
Prerequisites and basic concepts to start with OTLab.
Goal
Prepare students with basic network concepts and essential tools to follow the labs.
Concepts
- TCP/IP and OSI models
- IPv4 addressing, masks and subnets
- Ports and common protocols (TCP/UDP/ICMP)
- Ethernet basics and ARP
Tools
ping,traceroute,curlip,ifconfig(orip addr)tcpdump(basic capture)
Suggested labs
Discovery of OT-ICS devices through network scanning, service enumeration, and industrial protocol analysis.
Discovery and analysis of a Siemens S7 PLC through network scanning, service enumeration, and identification of vendor-specific protocols.
Discovery and analysis of a simulated service station control system through host identification, service enumeration, and ATG device analysis.
Configuration of a Modbus/TCP simulator and interaction with holding registers through network discovery and Modbus register access.
Practical exercises
- Ping between simulated hosts
- Capture an ARP packet with
tcpdumpand identify the IP→MAC mapping