Since 1987 we have been helping clients procure, install, secure and support their computer networks. When you work with the experts at Dominant Systems, you'll enjoy the security!


We recommend that organizations with less than 500 users deploy a combination of Fortinet firewalls together with Sophos endpoint protection software.  These systems have overlapping features which can protect against threats targeting specific security vendors.  In addition, each system offers best-in-breed overlapping protection from the scourge of cryptoviruses and ransomware.  Dual-factor authentication for remote users is also strongly recommended.

Let us help secure your network with these products and services:

  • Firewalls and advanced security solutions from Fortinet

  • SIEM systems, secure wireless and SD-WAN systems from Fortinet.

  • Server and endpoint protetion systems from Sophos.

  • Disaster  Recovery as a Service (DRAAS) systems from Unitrends.

  • Penetration testing and security assessments.

  • Post-incident security analysis and 24 x 7 recovery services.

  • End-user Phishing tests.

Michigan's Premiere
Computer Network Security Solutions Provider

Work with the Experts.

Enjoy the Security.

Woman on Computer

Dominant Systems is

proud to be on the

2021 list of the best


Network Security



for sharing!

Computer Network & Security Solution Partners 

Corporate & Government Accounts, please call

(734) 971-1210
for expert product selection, quick quotes and great prices.


Contact Us

© 1990-2018 Dominant Systems Corporation and others.  All rights reserved.

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Selling, installing and supporting
computer networks since 1987.

For the fastest response, call us anytime at (734) 971-1210

Coverage Areas
Ann Arbor to Detroit to Jackson to Flint and beyond

For local onsite computer network support, we cover an area stretching 100 miles out in any direction from our Ann Arbor offices. This means we can support clients in Ann Arbor, Belleville, Northville, Canton, Chelsea, Dearborn, Detroit, Dexter, Jackson, Livonia, Manchester, Milan, Monroe, Northville, Novi, Plymouth, Redford, Romulus, Saline, Taylor, Wayne, Westland, Wixom and Ypsilanti, including Wayne County and Washtenaw County.

For Managed Services, we cover organizations located within 50 miles of Ann Arbor, MI.

For Internet Security Assessments, we cover the entire USA. 

For remote and telephone support, we can support your satellite offices and remote workers in all 50 states.

Managed Services: The Modern Way to Manage Computer Networks

In this age of crypto-viruses and ransomware, it is critical that organizations manage their networks in a secure manner. For smaller organizations without an-house IT staff, managed services are the best way to accomplish this. Organizations that can benefit from fixed-price monthly support plans include government entities, manufacturers, medical and dental practices and service businesses. 

Our CompleteCARE managed services program is a fixed-price support program designed to cover all of your computer network maintenance needs. Features include: 

  • Unlimited remote, telephone and on-site support.

  • Daily monitoring of PCs, server, firewalls, and network components.

  • Regularly scheduled and as-needed onsite visits.

  • Quarterly file recovery tests to verify that data backup systems are working.

  • Yearly complete server and VM recovery tests to our hardware.

  • Easy to understand fixed-price monthly billing based on the number of servers plus the number of PCs/Tablets/Laptops/Kiosks that are installed.

  • License management and renewal support.

  • Priority access to Sr. IT engineers and executives.

  • Hardware diagnostics and basic repairs.

  • Support for Microsoft Windows Server, MS-Windows, MS-Exchange, Hyper-V, VMware, Linux (most versions), FortiOS (Fortinet's OS) and Cisco IOS.

  • Local support, management and ownership.

  • 10% labor discount on projects outside the scope of managed services.


CompleteCARE Managed Services

* $20 statement credit only available to commercial entities
with an exisiting terms account at Dominant Systems.   

How may we help you today?

Tech Support

Learn about and request computer network technical support services.

Network Security

Learn how our network security services can help minimize costly security incidents.

Managed Services

Discover how fixed monthly fee managed services can lower costs and improve security. 

Product Sales

Learn about the products we offer from Fortinet, HPE, HP, Microsoft, Cisco, and others.