VajraSec Technologies
Securing
0%
OT ARCHITECTURE & PROTECTION

Purdue Architecture

Design and implementation of secure boundaries between corporate and industrial networks.

Fortinet
Palo Alto
Cisco
Siemens
Rockwell
Schneider
IT/OT Segmentation

Demilitarized Zone (DMZ) firewalls, industrial VLANs, and OT protocol filtering

Wireshark

Wireshark

Protocol Deep Packet Inspection

Decodes Modbus, DNP3, CIP, and S7comm without production impact.

Wireshark
Splunk OT

Splunk OT

Industrial Telemetry & SIEM

Centralized logging and correlation for plant-wide operational visibility.

Splunk OT
Fortinet

Fortinet

Ruggedized Perimeter Protection

Industrial firewall rule validation and Purdue model segmentation.

Fortinet
Palo Alto Networks

Palo Alto Networks

Zero Trust Industrial Defense

App-ID inspection for OT protocols and granular access control policies.

Palo Alto Networks
Siemens SIMATIC

Siemens SIMATIC

ICS Engineering Baseline

Hardware configuration review and firmware vulnerability gap analysis.

Siemens SIMATIC
Rockwell Automation

Rockwell Automation

ControlLogix & PLC Defense

FactoryTalk security architecture and Allen-Bradley hardening baselines.

Rockwell Automation
Cisco Industrial

Cisco Industrial

Hardened Network Switching

Substation and plant-floor micro-segmentation aligned with IEC 62443.

Cisco Industrial
Schneider Electric

Schneider Electric

EcoStruxure Automation

Modicon PLC protection and Triconex safety instrumented system reviews.

Schneider Electric
Elastic / ELK

Elastic / ELK

Telemetry Search & Analytics

High-speed query engine for industrial anomaly and threat hunting.

Elastic / ELK
Kali Linux OT

Kali Linux OT

Controlled Assessment Tools

Passive, safety-first reconnaissance tools for industrial networks.

Kali Linux OT
Grafana OT

Grafana OT

Operational Dashboards & Metrics

Visualizing industrial network health, sensor flows, and security alerts in real time.

Grafana OT
Wireshark

Wireshark

Protocol Deep Packet Inspection

Decodes Modbus, DNP3, CIP, and S7comm without production impact.

Wireshark
Splunk OT

Splunk OT

Industrial Telemetry & SIEM

Centralized logging and correlation for plant-wide operational visibility.

Splunk OT
Fortinet

Fortinet

Ruggedized Perimeter Protection

Industrial firewall rule validation and Purdue model segmentation.

Fortinet
Palo Alto Networks

Palo Alto Networks

Zero Trust Industrial Defense

App-ID inspection for OT protocols and granular access control policies.

Palo Alto Networks
Siemens SIMATIC

Siemens SIMATIC

ICS Engineering Baseline

Hardware configuration review and firmware vulnerability gap analysis.

Siemens SIMATIC
Rockwell Automation

Rockwell Automation

ControlLogix & PLC Defense

FactoryTalk security architecture and Allen-Bradley hardening baselines.

Rockwell Automation
Cisco Industrial

Cisco Industrial

Hardened Network Switching

Substation and plant-floor micro-segmentation aligned with IEC 62443.

Cisco Industrial
Schneider Electric

Schneider Electric

EcoStruxure Automation

Modicon PLC protection and Triconex safety instrumented system reviews.

Schneider Electric
Elastic / ELK

Elastic / ELK

Telemetry Search & Analytics

High-speed query engine for industrial anomaly and threat hunting.

Elastic / ELK
Kali Linux OT

Kali Linux OT

Controlled Assessment Tools

Passive, safety-first reconnaissance tools for industrial networks.

Kali Linux OT
Grafana OT

Grafana OT

Operational Dashboards & Metrics

Visualizing industrial network health, sensor flows, and security alerts in real time.

Grafana OT
Wireshark

Wireshark

Protocol Deep Packet Inspection

Decodes Modbus, DNP3, CIP, and S7comm without production impact.

Wireshark
Splunk OT

Splunk OT

Industrial Telemetry & SIEM

Centralized logging and correlation for plant-wide operational visibility.

Splunk OT
Fortinet

Fortinet

Ruggedized Perimeter Protection

Industrial firewall rule validation and Purdue model segmentation.

Fortinet
Palo Alto Networks

Palo Alto Networks

Zero Trust Industrial Defense

App-ID inspection for OT protocols and granular access control policies.

Palo Alto Networks
Siemens SIMATIC

Siemens SIMATIC

ICS Engineering Baseline

Hardware configuration review and firmware vulnerability gap analysis.

Siemens SIMATIC
Rockwell Automation

Rockwell Automation

ControlLogix & PLC Defense

FactoryTalk security architecture and Allen-Bradley hardening baselines.

Rockwell Automation
Cisco Industrial

Cisco Industrial

Hardened Network Switching

Substation and plant-floor micro-segmentation aligned with IEC 62443.

Cisco Industrial
Schneider Electric

Schneider Electric

EcoStruxure Automation

Modicon PLC protection and Triconex safety instrumented system reviews.

Schneider Electric
Elastic / ELK

Elastic / ELK

Telemetry Search & Analytics

High-speed query engine for industrial anomaly and threat hunting.

Elastic / ELK
Kali Linux OT

Kali Linux OT

Controlled Assessment Tools

Passive, safety-first reconnaissance tools for industrial networks.

Kali Linux OT
Grafana OT

Grafana OT

Operational Dashboards & Metrics

Visualizing industrial network health, sensor flows, and security alerts in real time.

Grafana OT
Wireshark

Wireshark

Protocol Deep Packet Inspection

Decodes Modbus, DNP3, CIP, and S7comm without production impact.

Wireshark
Splunk OT

Splunk OT

Industrial Telemetry & SIEM

Centralized logging and correlation for plant-wide operational visibility.

Splunk OT
Fortinet

Fortinet

Ruggedized Perimeter Protection

Industrial firewall rule validation and Purdue model segmentation.

Fortinet
Palo Alto Networks

Palo Alto Networks

Zero Trust Industrial Defense

App-ID inspection for OT protocols and granular access control policies.

Palo Alto Networks
Siemens SIMATIC

Siemens SIMATIC

ICS Engineering Baseline

Hardware configuration review and firmware vulnerability gap analysis.

Siemens SIMATIC
Rockwell Automation

Rockwell Automation

ControlLogix & PLC Defense

FactoryTalk security architecture and Allen-Bradley hardening baselines.

Rockwell Automation
Cisco Industrial

Cisco Industrial

Hardened Network Switching

Substation and plant-floor micro-segmentation aligned with IEC 62443.

Cisco Industrial
Schneider Electric

Schneider Electric

EcoStruxure Automation

Modicon PLC protection and Triconex safety instrumented system reviews.

Schneider Electric
Elastic / ELK

Elastic / ELK

Telemetry Search & Analytics

High-speed query engine for industrial anomaly and threat hunting.

Elastic / ELK
Kali Linux OT

Kali Linux OT

Controlled Assessment Tools

Passive, safety-first reconnaissance tools for industrial networks.

Kali Linux OT
Grafana OT

Grafana OT

Operational Dashboards & Metrics

Visualizing industrial network health, sensor flows, and security alerts in real time.

Grafana OT
Standards Alignment
Aligned with IEC 62443-3-2 Zones and Conduits
Engagement Scope

Key components of our IT/OT Segmentation

A structured, defined delivery model ensuring you receive actionable outputs and tangible improvements to your operational security posture. Built specifically for industrial automation and critical infrastructure without risking production uptime.

Purdue Model Architecture Design

Purdue Model Architecture Design

Engineer a robust Demilitarized Zone (IDMZ / Level 3.5) preventing direct corporate traffic from reaching plant controllers.

Industrial Data Flow Profiling

Industrial Data Flow Profiling

Map and inspect all legitimate cross-boundary protocols including Historian replication, OPC, and remote engineering.

Boundary Firewall Rule Implementation

Boundary Firewall Rule Implementation

Enforce strict least-privilege allow-lists, eliminating legacy any-to-any connections between IT and OT.

Secure Remote Access Gateways

Secure Remote Access Gateways

Implement jump hosts and multi-factor authentication proxies terminating external sessions at the DMZ.

Segmentation Validation Testing

Segmentation Validation Testing

Verify that cross-zone boundary rules prevent lateral movement and contain threats to their originating zone.

IT/OT Segmentation Operational Challenge
The Operational Challenge

Protect your infrastructure from evolving threats.

Design and implementation of secure boundaries between corporate and industrial networks.

OT SECURITY METHODOLOGY

Proven 4-Stage Methodology for IT/OT Segmentation

Our structured engineering methodology is designed specifically for operational technology and industrial control environments. Every phase is executed passively with strict change governance, ensuring zero disruption to live manufacturing and continuous compliance with IEC 62443.

Zero operational disruption to live plant controls
Aligned with IEC 62443 & Purdue architecture
Deterministic, engineering-led deliverables
Get Started
1

Traffic Profiling

Analyzing all communications traversing corporate IT and plant networks to uncover shadow connections.

2

Industrial DMZ Architecture

Engineering a resilient Level 3.5 Industrial DMZ that terminates direct IT-to-OT application sessions.

3

Strict Protocol Whitelisting

Configuring firewall policies to permit only validated, essential protocols like OPC-UA and Modbus.

4

Boundary Validation

Executing passive verification to confirm total isolation and eliminate lateral attack pathways.

Target Audience

Who Benefits Most From This Engagement?

Engineered for plant operations, control systems engineers, and cybersecurity leaders responsible for operational resilience.

Industrial Network Architects

Industrial Network Architects

Need to design and enforce robust Purdue Level 3.5 DMZs and isolate flat plant networks from corporate IT threats.

Facilities With Remote Vendor Access

Facilities With Remote Vendor Access

Require secure boundary gateways and proxy jump hosts to terminate external third-party sessions safely.

Operations & Engineering Directors

Operations & Engineering Directors

Want absolute assurance that ransomware or malware on enterprise corporate networks cannot propagate to shop-floor PLCs.

Ready to Secure Your Plant Floor?

Speak with our OT cybersecurity experts to build a strategy that protects your critical processes.

BOOK OT SECURITY ASSESSMENT •