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Network Security · Long Island

Network Security in Long Island

NetSys provides managed network security to businesses in Long Island: the firewall, the segmentation, the Wi-Fi, remote access and failover designed from a site survey and monitored around the clock, with equipment from Cisco Meraki and Fortinet and a configuration that is documented. Our office is at 1 Prospect Park SW in Brooklyn, so Nassau County is 45 to 60 minutes from Park Slope by car and western Suffolk 60 to 90, so on-site visits to Garden City, Melville or Hauppauge are scheduled work rather than a special trip; engineers come to you for the work that needs hands, and monitoring and help desk run remotely around the clock. Most clients run between 10 and 75 seats, and every agreement is month to month.

All IT services in Long Island, NY

The short answer

NetSys provides network security to businesses in Long Island: a managed Cisco Meraki or Fortinet firewall, network segmentation, secure Wi-Fi, VPN and zero-trust remote access, intrusion detection, ISP failover and 24/7 network monitoring with an engineer acting on alerts. Engineers come to you for the work that needs hands; monitoring and help desk run remotely around the clock from our Brooklyn office. Most clients run between 10 and 75 seats, and every agreement is month to month.

How network security is delivered in Long Island

Our office is at 1 Prospect Park SW in Brooklyn, so Nassau County is 45 to 60 minutes from Park Slope by car and western Suffolk 60 to 90, so on-site visits to Garden City, Melville or Hauppauge are scheduled work rather than a special trip; engineers come to you for the work that needs hands, and monitoring and help desk run remotely around the clock. The buildings decide a lot of the design. Office parks along Route 110 and the Long Island Expressway have carrier choice, but medical suites in older Garden City and Great Neck buildings often share one circuit across several practices, and Hauppauge industrial parks put the server closet next to the shop floor, so segmentation and a second path out are designed on the first visit. The carriers we see most in Long Island are Optimum Business, Verizon Fios and Lightpath, and the failover design starts with which of them actually reach your building.

Who network security in Long Island is built for

Most of our Long Island work sits in Garden City, Melville, Hauppauge, Great Neck and Mineola: medical groups and surgical centers on athenahealth, manufacturers and aerospace suppliers on Epicor, accounting firms on CCH Axcess, law firms on Clio, insurance agencies on Applied Epic, and auto dealers on CDK Global. Each carries its own compliance load, which the section below covers, and each has a line-of-business vendor we coordinate with rather than work around. Companies with an internal IT person fit too; in that case we supply the monitoring, the security stack and the after-hours coverage behind them, and they keep their projects.

What tends to go wrong in Long Island

Two things shape the continuity design here. First, the weather and the grid: Sandy and Ida both flooded South Shore businesses, and summer thunderstorms take power out along the North Shore every year, so tested off-site backups and UPS runtime are part of every design. Second, the attacks that actually land locally are ordinary ones, and the public record shows how they go: the September 2022 ransomware attack on Suffolk County government, which took county websites, email and 911 support systems offline for weeks and was traced to an unpatched, internet-facing server. The controls in the next section are the ones that would have changed those stories.

What is included

Network Security in Long Island: what NetSys delivers

Firewall and edge

Managed Cisco Meraki MX or Fortinet FortiGate firewall with rules reviewed and firmware kept current
Exposed ports and vendor port-forwards closed and replaced with authenticated, logged access
Intrusion detection and prevention at the internet edge, with geo-blocking and threat-feed filtering
ISP failover with a second carrier or a cellular backup, tested rather than assumed

Segmentation and Wi-Fi

Segments for servers, staff, finance, printers, cameras, building systems and guests on Meraki MS switching
Secure Wi-Fi with per-user authentication through Entra ID instead of a shared password
Separate guest and visitor Wi-Fi that cannot see internal systems
Port security so an unknown device cannot join the wrong network

Access and monitoring

VPN or zero-trust remote access that checks the Intune-managed device before granting entry
Encrypted site-to-site links between offices, warehouses and clinics
24/7 monitoring of firewall, switch, access point and sensor telemetry, with alerts an engineer investigates
Configuration backups and a network diagram kept current in IT Glue

Engagement profile

A 40-person accounting firm in Hauppauge on one circuit

The specific engagements behind this profile are under NDA, so it is written as a generalization rather than a named client. Our published, client-approved outcomes are in case studies.

A 40-person accounting firms in Hauppauge occupying two non-adjacent floors connected by a cable the building's electrician ran years ago, with one Verizon Fios circuit serving both and CCH Axcess on a server that every device in the building can reach. One internet circuit serves both floors and it failed for most of a day during the busiest week of the year. A software vendor has a port forwarded through the firewall for support, staff work from home over a VPN with a shared password, and the conference room Wi-Fi is the network the file server sits on.

A quarterly firewall rule review put on the calendar, with unused rules removed and vendor access re-approved or revoked
On-site survey of every floor, closet and circuit, producing a network map the business has never had, with every device on the network identified
Network segmented on Meraki MS switches so the file server, the finance workstations, the printers, the cameras and the conference room Wi-Fi no longer share one broadcast domain
Remote access rebuilt with per-user credentials, multifactor authentication and an Intune device check, so the shared VPN password stops existing
Site-to-site links established between the office and the warehouse or clinic, with multifactor authentication on every remote path
24/7 monitoring of firewall, switch, access point and sensor telemetry, with alerts routed to an engineer who investigates

Cameras, door controllers and printers no longer share a wire with finance, remote access checks the device before it lets anyone in, and the network can be rebuilt from a documented configuration. Terms stay month to month.

Published case study

Multi-site medical practice: seven locations on an encrypted VPN mesh

A rapidly expanding medical practice had seven locations bolted together one network at a time, undersized servers on an end-of-life operating system and recovery objectives that existed on paper only. NetSys ran a gap analysis against the HIPAA Security Rule, refreshed the platform on Windows Server with Hyper-V, put business-grade firewalls at all seven sites joined in a site-to-site VPN mesh with per-role access controls, and added encrypted off-site backups with documented recovery objectives and scheduled restore tests. NetSys manages the servers and workstations on an ongoing basis.

Read the full case study (7 locations · 200+ staff)

Compliance in Long Island: the SHIELD Act and what sits on top of it

If you hold personal information on a resident of New York, the New York SHIELD Act (General Business Law § 899-bb) requires any business holding private information on a New York resident, with no employee-count threshold, to keep reasonable administrative, technical and physical safeguards, and § 899-aa sets the breach-notification duty. Small businesses get a scaled standard, not an exemption. Licensed financial businesses add NYDFS Part 500 (amended in November 2023, with multifactor authentication, asset inventories and annual certification now expected of nearly every covered entity). Healthcare practices layer HIPAA on top, and advisory firms answer to the SEC and FINRA. Network security answers the access-control and monitoring parts of those rules directly: who can reach which systems, what the firewall logged, and whether payment and patient systems are isolated from everything else. Most firms we take over have none of it documented, which is the part that matters if you ever have to demonstrate compliance, so the documentation is built during onboarding rather than sold as a separate project.

What network security costs in Long Island

Network security is priced as a monthly managed service per site, with hardware either included on the agreement or purchased outright. What moves the number: the number of sites and circuits, whether the site needs SD-WAN across several carriers, the count of switches and access points under management, and whether 24/7 monitoring is standalone or part of a wider managed agreement. Failover circuits are billed by the carrier at cost. We quote from a site survey, and terms run month to month. Our managed IT pricing page explains how monthly fees are built.

How the monthly fee is built

Who this fits, and who it does not

Best fit: businesses on one or two floors that inherited their network, practices that need patient or client systems isolated from waiting-room Wi-Fi, companies with an office and a warehouse or second site to connect, and any business with staff at home who need a safe way back into office systems.

Not a fit: single-person offices on a consumer router with nothing on the network but a laptop, or organizations that want equipment sold and installed without ongoing monitoring. The value is in the management and the monitoring, not the box.

Network Security in Long Island: FAQs

Our building only has one carrier. What are the options?

Cellular failover works in almost every building and does not need the landlord's riser. Where a second wired carrier is possible, we handle the order and the cutover. The decision is made from the site survey rather than assumed.

Do you also handle the cybersecurity side?

Yes. Network security is one layer; endpoint detection and response, identity protection, email security and backups are the others. Most clients take the full security stack, and our cybersecurity service page describes how the pieces fit together.

Do you install and manage firewalls?

Yes. We specify, install, configure and manage Cisco Meraki MX and Fortinet FortiGate firewalls, keep firmware current, review rules quarterly and monitor them around the clock. Vendor access through the firewall is logged and switched off when the work ends.

Do you have an office in Long Island?

Our office is at 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215, and Nassau County is 45 to 60 minutes from Park Slope by car and western Suffolk 60 to 90, so on-site visits to Garden City, Melville or Hauppauge are scheduled work rather than a special trip. Engineers come to you for anything the help desk cannot fix remotely, and monitoring runs around the clock from Brooklyn. Every agreement is month to month.

Does the NY SHIELD Act apply to a small business?

Yes. It applies to any business holding private information on a New York resident, with no employee-count threshold. Small businesses get a scaled standard, meaning safeguards appropriate to their size, but not an exemption, and the breach-notification duty under § 899-aa applies to everyone.

Firewall, Wi-Fi and monitoring

Find out what your network lets through.

Discuss your firewall, segmentation, remote access and monitoring needs with an engineer. Any technical review begins with an agreed scope and access requirements.

Explore Network Security Scope 845-203-3914