PacketVIper Modbus Command Enforcement
PacketViper Modbus Command Protection: Stop Unauthorized Industrial Commands Inline
Modbus runs the pumps, valves, breakers, drives, and controllers behind water, power, manufacturing, oil and gas, and transportation. It was designed in 1979 for trusted serial links, so it has no authentication, no authorization, and no encryption. Any device that can reach TCP port 502 can read a controller's registers or write to them: flip a coil, change a setpoint, or force a controller offline.
Traditional firewalls only allow or block port 502 wholesale. They cannot see the command inside the connection. PacketViper can.
In this video we show how PacketViper Modbus Command Protection inspects every Modbus request down to the function code, unit ID, register, and value, and enforces a per-device policy that defines exactly who may talk to each device and what they are allowed to do. It runs inline and agentless on the same appliance that delivers PacketViper's Automated Moving Target Defense, with no software on the OT devices and no changes to the control network.
What you will see:
• Read vs write: allow polling, deny state-changing writes on a per-device basis
• Per-device policy: allowed sources, function codes, unit IDs, register ranges, and value limits
• Start open, narrow in: observe normal behavior first, then apply surgical enforcement, so you never crush production
• Write-flood and register-enumeration detection with source blocking scoped to the offender, never the subnet
• Serial-to-TCP gateways: distinct policy per downstream unit ID behind a single IP
• Configure once, enforced everywhere: one policy at the Federation Manager pushed identically to every appliance that sees the device
• Audit evidence as a byproduct, aligned to IEC 62443, NIST SP 800-82, the NIST Cybersecurity Framework, and NERC CIP
A blocked command is not the end of the story. It is the beginning of an investigation: a misconfigured device, an unknown integration, or a genuine threat. PacketViper classifies the attempt and puts it in front of the right people.
Single box. Agentless. Transparent. Built for the constraints of operational technology.
Learn more: https://packetviper.com/modbus-ot-sec...
Book a demo: https://packetviper.com/book-a-demo/
#Modbus #OTSecurity #ICS #SCADA #CriticalInfrastructure #AMTD #IndustrialCybersecurity #PacketViper #NERCCIP #IEC62443