OT networks & industrial cybersecurity
OT cybersecurity for Houston plants
A PLC that shares a flat network with email is one mistake away from a bad week. Good Day Source designs plant networks, separates IT from OT, and sets up remote access that is intentional.
The work aligns with ISA/IEC 62443 principles. That is a design standard we follow, not a certification we claim.
Who it is for
Facilities that need a vendor, an integrator, or a corporate office to reach a control system without opening the whole plant, and contractors handing a network over at the end of a job.
Capabilities
Plant network design
A network diagram and an addressing plan that match how the control system is actually wired.
IT/OT segmentation
A boundary between business systems and the equipment, with the paths across it written down.
Secure remote access
Remote support that is logged and limited to the systems that need it.
ISA/IEC 62443 principles
Zones, conduits, and least privilege as design rules, not a badge on the wall.
Typical deliverables
- Network diagram
- Segmentation description
- Remote-access method and who it is for
- A list of what is still open
Industries served
How we work
Draw what is there, decide what must not touch, then change the network in that order.
- 01
Scope
Walk the equipment and define the sequence of operations.
- 02
Build & simulate
Program and test before it touches the field.
- 03
Commission & document
Startup, settings, and records for every unit.
- 04
Ship & support
Logistics, monitoring, and ongoing support.
Related services
Request a technical consult
A sketch of the current network is enough to start. We will say what we can see and what we cannot.