Individual skill
implementing-ics-firewall-with-tofino
Deploy and configure Tofino industrial firewalls from Belden/Hirschmann to protect SCADA systems and PLCs using deep packet inspection for OT protocols including Modbus, EtherNet/IP, OPC, and S7comm, enforcing granular access control between ICS security zones.
internal/tools/skills/data/ot-ics-security/implementing-ics-firewall-with-tofino/SKILL.md
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- ot-security Declared skill tag
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# Implementing ICS Firewall with Tofino
## When to Use
- When deploying zone-level firewall protection directly in front of critical PLCs or RTUs
- When requiring deep packet inspection of industrial protocols (Modbus, EtherNet/IP, OPC, S7comm)
- When implementing IEC 62443 zone and conduit boundaries with protocol-aware enforcement
- When protecting legacy PLCs that cannot be patched and need compensating controls
- When segmenting control network zones without disrupting existing industrial communications
**Do not use** for enterprise IT firewall deployment, for perimeter firewall between IT and OT (use Palo Alto/Fortinet at the DMZ), or for environments using only IP-based protocols without OT-specific DPI needs.
## Common Misconfigurations & Verification
