
Managed IT Services on Long Island
For Nassau and Suffolk organizations of roughly 10 to 75 people with nobody whose job is IT, or one person who cannot cover all of it. NetSys, a managed service provider since 1998, takes responsibility for the whole environment and every vendor around it, with engineers driving out from Brooklyn for the work that needs hands.
The short answer
NetSys provides managed IT services on Long Island under one month-to-month agreement: the help desk, 24/7 monitoring and patching, ThreatDown managed detection and response, Microsoft 365 and Intune administration, tested backups, firewalls and Wi-Fi, documentation and vendor management. Nassau County and western Suffolk are inside our on-site area, roughly 45 to 75 minutes from our Park Slope office by car, so engineers visit for hardware, closets and moves after remote fixes. Patchogue and Port Jefferson are 50 to 60 miles out, so we confirm drive time first, and the East End is supported remotely. Pricing is per user per month after an assessment.
Service information by The NetSys Group. Our editorial standards.
Choosing a provider rather than comparing plans? Our page on IT services on Long Island covers coverage, the on-site team and every service we run there.
How managed IT is delivered across Nassau and Suffolk
With light traffic an engineer leaving Park Slope reaches Garden City or Uniondale in about 45 minutes, Melville in an hour and the Hauppauge industrial park in about 75; the Long Island Expressway at rush hour adds plenty to each. That puts Nassau and western Suffolk inside our on-site area, and visits there are routine scheduled work: closet rebuilds, firewall swaps, new-hire desks, office moves. Patchogue and Port Jefferson sit 50 to 60 miles out, so we confirm drive time before booking a visit. Riverhead, the North Fork and the Hamptons are supported remotely, with laptops shipped pre-configured through Windows Autopilot. Everywhere, most work happens remotely: NinjaOne watches and patches every device, alerts open tickets before staff notice, and severe problems such as ransomware or an office with no internet go straight to your dedicated engineer. Monitoring runs 24/7 from Brooklyn, and so does emergency service. Our staffed help-desk hours are 4 a.m. to 11 p.m. Eastern time, seven days a week. The proposal states severe-incident escalation, authorized remediation and any other after-hours work.
One agreement for the whole environment, and the vendors around it
Managed IT means one firm is accountable when anything with a power cord or a password misbehaves. The agreement covers laptops and desktops enrolled in Intune, the Microsoft 365 tenant and its licenses, Entra ID Conditional Access, Barracuda email protection, the Cisco Meraki or Fortinet firewall, switches and access points, the file server or SharePoint, Datto SIRIS or Veeam backups and KnowBe4 training. IT Glue holds the documentation, from circuit IDs to warranty dates, and Keeper replaces the password spreadsheet. The part owners notice most is vendor management. When the Optimum, Verizon or Lightpath circuit drops, we open the carrier ticket and stay on it. We deal with the phone provider, the copier lease, the landlord's electrician and the company behind your line-of-business software, whether that is the practice's EHR, a manufacturer's ERP or an agency management system. The vendor supports its application; we own the accounts, servers, network and backups underneath it.
Running offices in two counties as one business
Long Island firms rarely stay in one building. A law practice opens a satellite near the Mineola courthouses, an accounting firm adds a Melville office for Suffolk clients, a medical group buys a practice in Smithtown, and each new site arrives with its own router, its own Wi-Fi password and its own way of doing things. We bring them under one standard. Every office gets the same firewall family, joined to the others by encrypted site-to-site links or by routing everyone through Microsoft 365 and Entra ID, so staff can work from any location with the same sign-in. Workstations come from one Autopilot profile, printers are mapped by location, and IT Glue records each site's circuits and equipment. Since the LIRR began running to Grand Central Madison in January 2023, many staff split the week between a Long Island office, Manhattan and home, so laptops and identity, not desks, are what we manage first.
Storms, floods and planning for a dark office
FEMA's records show both Nassau and Suffolk in the major disaster declarations for Hurricane Sandy in 2012, Tropical Storm Isaias in 2020 and the remnants of Ida in 2021, and Suffolk again for the flash flooding of August 18 and 19, 2024, when Sound Beach recorded 10.18 inches of rain and Stony Brook University had to cancel move-in day. Isaias alone cut power to some 420,000 PSEG Long Island customers. Managed IT here assumes the office will go dark sometimes. Network equipment comes off basement floors, the firewall and switches sit behind a UPS, cellular failover backs up single-circuit offices, and email and files live in Microsoft 365 so staff keep working from home. Server data gets an immutable off-site copy, and we restore from it on a schedule so recovery time is something we have measured rather than something we hope for.
The first 30 days with NetSys on Long Island
Week one is discovery. An engineer walks each office, photographs the closets, records circuits and carrier equipment, and installs NinjaOne on every computer so we can see patch levels, disk health and warranty dates. Week two is security: MFA and Conditional Access on every account, ThreatDown on every endpoint, Barracuda in front of the mailboxes, and a first backup followed by a logged restore test. Weeks three and four are cleanup and cutover: removing the previous provider's remote tools, moving domain, DNS and carrier accounts into records you own, fixing the printer everyone has learned to work around and giving staff a one-page guide to the help desk. At day 30 you receive the documentation and a ranked list of next steps. Machines still on Windows 10, which lost support on October 14, 2025, or Windows Server 2016, which loses extended support on January 12, 2027, become quoted replacement projects.
Managed IT services on Long Island: what NetSys delivers
Day-to-day support
- Engineers on the help desk by phone, email and Teams, with your dedicated engineer responding immediately to ransomware, outages, lost internet or email that stops working
- NinjaOne monitoring on every server, workstation and firewall around the clock, with an engineer acting on each alert
Security and recovery
- ThreatDown MDR and EDR on every workstation, laptop and server
- Multifactor authentication, Entra ID Conditional Access and Microsoft Defender for Business across Microsoft 365
Devices, vendors and planning
- Intune and Windows Autopilot, so a new laptop configures itself at first sign-in
- Keeper password management and KnowBe4 security awareness training for every user
Multi-site medical practice: seven locations on one encrypted network, with ongoing management
A rapidly expanding medical practice in New York's Lower Hudson Valley, with seven locations and more than 200 staff, ran its EHR on undersized servers with an end-of-life operating system, and each new office had added a one-off network. NetSys assessed the practice against the HIPAA Security Rule, refreshed the servers, joined all seven locations through business-grade firewalls in an encrypted site-to-site VPN mesh with role-based access, and added encrypted off-site backups, recovery objectives for each system and scheduled restore tests. NetSys provides ongoing management for the servers and workstation hardware.
Managed IT services work for other clients
- Dental practices
Multi-location dental practice
Management of 48 computers across 6 offices, endpoint protection, network segmentation, and centralized backup monitoring.
Network Security & Firewall ManagementIT for Dental Practices
Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a Long Island client.
What managed IT costs in Long Island
Managed IT is priced per user per month for a fully managed agreement, and the number moves with four things more than with headcount: how many servers you run, whether you need after-hours coverage beyond monitoring, how much compliance documentation you carry, and whether we are co-managing alongside an internal person or running everything. We quote from an assessment, not a phone call, and the agreement runs month to month. What belongs in the monthly fee versus what is billed separately is set out on our managed IT pricing page.
Who this fits, and who it does not
Best fit: Long Island medical groups, manufacturers, accounting and law firms, insurance agencies and dealerships with 10 to 75 employees in one or more offices across Nassau and Suffolk, with no internal IT or one person who needs help.
Read next
Industry pages: IT for Healthcare · IT for Manufacturing
Terms used on this page: Co-Managed IT · Managed Service Provider (MSP) · Remote Monitoring and Management (RMM)
Guides: the questions to ask before signing with an MSP · what managed IT costs per user in 2026
Related pages
Read the full Managed IT Services service page. See everything NetSys delivers in Long Island, NY.
Also in Long Island: IT Consulting · IT Support · Network Security · Cybersecurity
Industry pages for Long Island: IT Support for Law Firms on Long Island · IT Support for Medical Practices on Long Island · IT Support for Dental Practices on Long Island · IT Support for Accounting Firms on Long Island · IT Support for Construction Companies on Long Island · IT Support for Architecture and Engineering Firms on Long Island · IT Support for Financial Services Firms on Long Island · Logistics IT Support on Long Island · Manufacturing IT Support on Long Island · Medical Office IT Support on Long Island · IT Support for Professional Services Firms on Long Island · Urgent Care IT Support on Long Island · Wealth Management IT Support on Long Island
Managed IT Services elsewhere: Hicksville · Great Neck · Hauppauge · Huntington · Mineola · New York City
Related services: Co-Managed IT · Managed IT Pricing & Scope · Switching Managed IT Providers · Outsourced IT Help Desk
Managed IT services on Long Island: FAQs
Is NetSys a managed service provider for Long Island businesses?
Yes. NetSys has been a managed service provider since 1998. We work from one office, in Park Slope, Brooklyn, and our engineers go on site throughout Nassau and western Suffolk. A Long Island agreement puts the help desk, monitoring, patching, security, backups, Microsoft 365, the network and vendor management under one month-to-month contract with a dedicated account manager who has a real cell number. The engineering team is degreed in electrical engineering, electronics engineering or computer science, and client retention sits at 98%.
Do you provide on-site managed IT on Long Island?
Yes, across Nassau County and western Suffolk, from Great Neck and Garden City out to Melville and Hauppauge. Engineers come to the office for hardware swaps, network closet work, firewall installs, new-hire setups and moves, and for the walk-through at the start of every engagement. Most requests are fixed remotely first, often while the caller is still on the phone. Patchogue and Port Jefferson are at the edge of our range, so we confirm the drive time before booking. East End offices are supported remotely and do not get on-site visits.
How much do managed IT services cost on Long Island?
We price managed IT per user per month after an assessment of your environment, and we do not publish a rate card. The figure moves with headcount, shared devices and servers, how many offices are in scope and how far apart they are, licensing you already own, compliance evidence such as HIPAA or NYDFS Part 500 documentation, and whether an internal IT person keeps part of the work. One-time projects, such as replacing a Windows Server 2016 machine or moving a file server to SharePoint, are quoted separately after scoping.
What does a managed IT plan include for a Long Island business?
The plan covers the help desk, NinjaOne monitoring and patching, ThreatDown managed detection and response, Microsoft 365, Intune and Entra ID administration, Barracuda email protection, firewall, switch and Wi-Fi management, backups with periodic restore tests, IT Glue documentation, Keeper for shared credentials, KnowBe4 training where it fits, and vendor management for carriers and line-of-business software. New hires are set up and departures closed out as part of the service. Office moves, migrations and buildouts are scoped and priced as projects so the monthly fee pays for running the environment.
Can you support an office on the East End or the North Fork?
Yes, remotely. Riverhead, the North Fork and the Hamptons are beyond the distance where we send engineers on site, so an East End office gets the same help desk, monitoring, security stack and backups as everyone else, with hardware shipped to you pre-configured. Laptops arrive enrolled through Windows Autopilot and Intune, and a firewall arrives ready for your staff or your own cabling contractor to connect while an engineer guides them by phone. An East End office can pair that with a local electrician or low-voltage contractor for cabling.
How do you take over from our current IT provider?
We overlap rather than cut over cold. First we collect administrator credentials and confirm who controls the domain, Microsoft 365, the firewall and the backups. Our monitoring and security agents go on while the old provider is still in place, we rebuild backups under our control and test a restore, and then the help desk moves to us and the previous provider's access is removed. Three to four weeks is typical for a 20-person office, with a rollback plan for each step. Staff should never be left without someone to call.
Get the whole of your IT handled by one accountable team.
Tell us how many people and devices you have, what you run today and what keeps breaking. We come back with a written scope, the responsibilities on each side and a monthly figure, before you decide anything.
