Stateful Inspection Firewalls Explained for OT Security | OT Security Module 5.3

A packet filter will happily forward a reply to a request that was never sent — stateful inspection is the fix that closes that gap. In this lesson, we explain how stateful firewalls maintain a session state table, why this closes attack paths that packet filters leave open, and what stateful inspection still can't see. We also address latency considerations for OT environments. By the end of this video, you'll understand how session tracking blocks crafted-packet attacks, and where stateful firewalls are the right choice in your network architecture. 🕐 Chapters: 0:00 – What stateful inspection is and how it works 1:30 – How session tracking blocks crafted-packet attacks 3:30 – What stateful inspection can't do: payload blindness 5:00 – OT latency considerations 5:45 – Key takeaways and what's coming next (next-generation firewalls) Part of Module 5: Firewalls Full course playlist: [link] If this was useful, subscribe for more content like this. #OTSecurity #IndustrialCybersecurity #ICS #SCADA #StatefulInspection #NetworkSecurity