// NETWORKS, OT, AND IT · HANS STUDY · ONTARIO, CANADA
Networks, OT, and IT
Hans Study is an independent network and security consultant in Ontario, Canada, working across IT networks, OT networks, and the security systems that sit on both. The work covers network architecture, industrial and OT networks, security network design, wireless, data centre and cabling, and the firewall, switch, email, and Microsoft 365 reviews underneath a security program, delivered remotely by default through the DHD, a hardened remote access device.
Assess
Enterprise network architecture →
Independent enterprise network architecture consulting across Canada and the US. Architecture review, greenfield design, and remediation. Vendor-agnostic.
Industrial and OT networks →
Independent OT and ICS network consulting for utilities, transportation, and critical infrastructure. NERC CIP, segmentation, secure remote access.
Firewall review →
Independent FortiGate, Palo Alto, Cisco, and Check Point rule reviews: shadowed rules, any-any, stale objects, and admin exposure.
Starting at $1,800
Switch configuration audit →
Management plane, port security, segmentation, and logging, audited on access and core switches against a published rule set.
Starting at $2,000
Microsoft 365 and Entra security review →
Microsoft 365 and Entra tenant configuration checked against published Government of Canada guidance.
Starting at $2,500
Web hygiene review →
Domains, DNS, mail authentication, certificates, headers, CMS access, scripts, and public profiles, reviewed as one technology stack.
Starting at $750
Design
Security network design →
Network design for CCTV, access control and security systems. Segmentation, multicast, PoE budgets, switch sizing and redundancy, designed independently.
Wireless design and validation →
Predictive wireless design, AP placement and channel planning, plus measured validation surveys that show what the coverage actually is.
Data centre and structured cabling →
Independent data centre and structured cabling advisory. TR design, cabling specs, submittal review, and owner’s representative work through construction.
Harden
Email and domain hardening →
SPF, DKIM, and DMARC taken from p=none to enforcement, following Cyber Centre guidance ITSP.40.065.
Starting at $395
Site rebuild →
A small-business website rebuild, up to 8 pages, with a hosting and maintenance care plan after launch.
Starting at $1,950
Advise
OT/IT network and security advisory →
Security for the OT, IT, and physical security boundary. Independent convergence assessments and architecture for critical infrastructure and industrial.
Ongoing care
Managed network and server care →
Preventative network and server monitoring, patching, and maintenance, plus on-demand remote support. Independent, CISSP-certified, remote-delivered.
How the DHD works →
The hardened device that dials home from your network for the length of an engagement. Outbound only, encrypted, logged, and reimaged.
Tell me what's running and where
Platform, device counts, and how many sites. A scoping call sorts out which of these fits the problem in front of you.