Comprehensive OT Security Audit

@farooqtahir2013

With my extensive experience in Network Administration and Security, I believe I'm the perfect fit for your comprehensive OT security audit project. Over the past decade, I've worked with industry leaders such as Cisco, Fortinet, Palo Alto, and Checkpoint--providing me with expert knowledge on diverse network environments including the Honeywell, Yokogawa, and Rockwell systems you have specified. In previous assignments, I followed a systematic approach that aligns perfectly with your requirement of minimizing plant disturbances while ensuring all devices are thoroughly evaluated. My proficiency in tools like Nessus and Wireshark allow me to quickly uncover potential vulnerabilities without putting production uptime at risk. My deliberate method also includes insightful report generation leveraging recognized OT frameworks such as IEC 62443 and NIST CSF where appropriate which directly fulfills your request for detailed findings. Lastly, my proven track record reinforces my value as an effective communicator with non-cyber engineers. Rest assured that I practiced clarity in my previous reports to aid comprehension even for individuals outside the cybersecurity field. The result is efficient execution of the remediation process to address the core issues identified instead of constant follow-ups. Let's partner on this project and fortify your plant-floor environments with a robust security plan.

@AZTURK1

Hi there, You need an end-to-end audit across 2x Honeywell + 2x Yokogawa control systems, 400 I/O sensors including 100x Rockwell PLCs and 100x Rice Lake Weigh-Bridge, mapping every segmentation, firmware and access weakness without touching uptime - I can do this methodically per IEC 62443 and NIST CSF. What I'll do: ✅ Passive assessment of Honeywell/Yokogawa DCS, Rockwell PLCs and all 400 I/O points covering network segmentation, firmware, access controls, physical interfaces and protocol exposure with Wireshark, Nessus (passive), SHODAN/SecurityCenter and vendor utilities ✅ Kick-off brief with methodology/schedule, interim snapshot after discovery, plus per-stack final reports with executive summary, CVSS-rated findings, root-cause and step-by-step remediation, diagrams and annotated flows + walkthrough ✅ Zero-disruption control: SPAN/mirror captures only, no active scans on live OT without written window, all checks lab-validated and config backups verified before any recommendation ✅ OT Security Auditing aligned to IEC 62443 & NIST CSF ✅ Industrial network segmentation & protocol analysis ✅ Honeywell / Yokogawa DCS & Rockwell PLC hardening ✅ Risk Assessment with CVSS scoring and prioritized remediation ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ 300+ projects delivered, 280+ five-star reviews You'll get fast responses, 24-hour availability and unlimited revisions until you're satisfied.

@ExpertNetworkEng

Hello, I’m a Senior Network & Security Engineer with 10+ years of hands-on experience designing, implementing, and migrating enterprise and service-provider networks. I specialize in Network Security, SD-WAN, routing & switching, enterprise wireless, and secure network architecture, helping companies modernize legacy networks, improve reliability, and reduce WAN costs. Core expertise: - Firewalls & Security: FortiGate, Palo Alto, Cisco ASA / Firepower IPsec & SSL VPN, site-to-site, remote access, policy design - Routing & Switching: Cisco ASR/ISR, Catalyst, Nexus, Juniper Routers (M10, MX 960) and SRX 500 (BGP, OSPF, EIGRP, IS-IS, MPLS, VLANs, STP, HSRP/VRRP) Enterprise LAN & campus design - LAN Switching (Multi-Vendor): Cisco, Juniper, Meraki, HP, Aruba, FortiSwitch Access/core design, redundancy, QoS, segmentation - Enterprise Wireless: Cisco WLC & APs, Cisco Meraki Wi-Fi, Ubiquiti, Aruba Wi-Fi, FortiAP Coverage design, roaming, security, troubleshooting - SD-WAN: Fortinet SD-WAN, Cisco SD-WAN (Viptela), Cisco Meraki (hub-and-spoke, MPLS + Internet, segmentation, HA, traffic steering) - Cloud & Hybrid Networking: AWS / Azure / GCP Site-to-site VPN, routing integration - Network Automation: Python Certifications: CCIE Enterprise Cisco Certified Specialist – Enterprise SD-WAN Implementation CCNP Data Center CCNP Security Juniper JNCIA-Junos, JNCIA-Cloud If you share your current setup and goal, I can propose a clear and practical solution. Best regards,

@atrivedi12

Hello Employer, We can do OT-Hallo Assessment report on a primary level based on the below information :- A list of all hardware (PLCs, RTUs, HMIs), software, firmware, and network pathways within the industrial environment. Number of assets and clusters / networks. Architecture of the system. Make and models of switches and firewalls. Make model of the DCS / PLC being used. A 24*7 continuous assessment report also can be provided by deploying NIDS and TAPS but will have to visit the site and share you the proposal based on site visit. Looking forward.

@SSNH

Hello mate, This project requires a careful OT assessment without risking production uptime, and that is exactly how I would approach it. My background is in Cybersecurity, Network Security, Risk Assessment and Infrastructure Security. I can assess segmentation, firmware exposure, access control, protocol risks and device configuration across Honeywell, Yokogawa, Rockwell and related plant systems. I would use a low-impact methodology based on IEC 62443 and NIST CSF, supported by tools such as Wireshark, Nessus and vendor-specific utilities where safe. Deliverables will include prioritised findings, risk ratings, remediation steps, architecture/network-flow diagrams and a clear presentation for your operations team. Available to discuss access requirements, safety constraints and the assessment schedule. Best regards