Network Security Manhattan: Managed Firewalls, Secure Wi-Fi and ISP Failover
NetSys provides managed network security to businesses in Manhattan: 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.
The short answer
NetSys provides network security to businesses in Manhattan: 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. On-site visits are scheduled from our Brooklyn office. The help desk is staffed seven days a week from 4 a.m. to 11 p.m. Eastern time, and monitoring and emergency service run 24/7. Ongoing agreements run month to month.
Service information by The NetSys Group. Our editorial standards.
How network security is delivered in Manhattan
Our office is at 1 Prospect Park SW in Brooklyn. Engineers schedule visits for work that needs hands, with access and travel agreed for your address. 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. Confirm landlord access, circuit diversity, cabling and equipment space before approving a network change. Carrier options to check in Manhattan include Verizon Fios, Spectrum Business, Lightpath and Crown Castle fiber; availability, routing and installation dates must be verified at your address before a failover design is approved.
Who network security in Manhattan is built for
Businesses we can support in and around Midtown, the Financial District, Hudson Yards, the Flatiron District and the Upper East Side include law firms on iManage, hedge funds and family offices on Bloomberg Terminal, wealth managers and RIAs on Orion, accounting firms on Thomson Reuters CS Professional Suite, agencies and media companies on HubSpot, and real estate and property managers on Yardi Voyager. These are examples of business and application needs, not a list of local clients. We coordinate infrastructure, identity and integration with the application vendor, and identify any compliance requirements during discovery. Companies with an internal IT person can agree a split of responsibilities, systems and coverage hours before work begins.
Continuity planning for your Manhattan business
Start with the systems your team cannot work without. Record the impact of a building power outage, a failed internet circuit, a compromised account and an unavailable application vendor. Then agree recovery priorities, an independent access path, protected backup copies and a test for each critical workflow. Controls reduce particular risks; they do not guarantee that an incident cannot happen.
Network Security in Manhattan: 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
A 68-person law firm in Midtown on one circuit
This planning example shows how we could scope the work. It is not a claim about a customer in this market or a measured result. For published customer work, see our case studies.
A 68-person law firm in Midtown occupying two non-adjacent floors connected by a cable the building's electrician ran years ago, with one Lightpath circuit serving both and a separate internal file server that every device in the building can reach; staff depend on iManage for their business workflow. 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.
- Fortinet FortiGate specified instead of Meraki where the site needs SD-WAN across several circuits
- 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
- A second carrier or a cellular failover circuit provisioned with automatic cutover, and the failover tested with the office watching
- 24/7 monitoring of firewall, switch, access point and sensor telemetry, with alerts routed to an engineer who investigates
- A quarterly firewall rule review put on the calendar, with unused rules removed and vendor access re-approved or revoked
- Cisco Meraki MX firewall installed with intrusion prevention, geo-blocking and DNS filtering, and the vendor port-forward replaced by a logged, time-limited remote session
The next deadline week runs on a network with two paths to the internet and a vendor who gets in only when invited. A phished laptop on the guest Wi-Fi can no longer reach client files, and an engineer sees a failed circuit before the partners do. The business pays month to month.
Large multi-divisional company: one platform, two isolated worlds
Two divisions of a 300-person health-services company had grown separate IT stacks with duplicate servers, licensing and backups. NetSys designed a single central platform with shared infrastructure at the base and strict logical separation above it: centralized servers, VPN, file storage and virtual desktops, with identity segmented by division through separate access policies, MFA everywhere and Conditional Access by role. Divisions were migrated one at a time with parallel-run weekends, and one security stack, immutable backups and 24/7 monitoring now cover both. The company reported 44% lower annual infrastructure spend after eliminating the duplicate stack.
Network security 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.
- Healthcare
Three-location urgent care group
IT support for 36 workstations, patient data backups, endpoint protection, and secure networking across all three locations.
- Retail
Seven-location clothing retail chain
Management of 56 computers, point-of-sale network support, endpoint protection, and standardized Wi-Fi and firewall configurations.
Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a Manhattan client.
Compliance in Manhattan: the SHIELD Act and what sits on top of it
The New York SHIELD Act (General Business Law § 899-bb) requires reasonable administrative, technical and physical safeguards for covered private information. The small-business standard considers the size and complexity of the business and the sensitivity of the information; it is not a general small-business exemption. The service scope should identify the records, access controls, retention settings and incident evidence your business needs; your legal or compliance adviser determines which requirements apply. 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. Discovery identifies missing records and assigns the documentation work. Applicable duties depend on the business, data, exemptions and contracts; your legal or compliance adviser determines which requirements apply.
Primary sources
What network security costs in Manhattan
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.
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.
Read next
Industry pages: IT for Legal · IT for Hedge Funds & Family Offices
Terms used on this page: Next-Generation Firewall (NGFW) · Network Segmentation · Zero Trust
Guides: SD-WAN across multiple locations · the business internet failover FAQ
Related pages
Read the full Network Security & Firewall Management service page. See everything NetSys delivers in Manhattan, NY.
Also in Manhattan: IT Consulting · Managed IT plans and pricing · IT Support · Cybersecurity
Industry pages for Manhattan: IT Support for Law Firms in Manhattan
Network Security elsewhere: New York City · Brooklyn, NY · Nassau County, NY · Suffolk County, NY · Westchester County, NY · Stamford, CT
Related services: Network & Wi-Fi Management · Managed Detection & Response (MDR) · Zero Trust Security Implementation · Business Wi-Fi Installation
Network Security in Manhattan: FAQs
Is network monitoring 24/7?
Yes. Firewall, switch, access point and sensor telemetry feed a console an engineer watches around the clock, and alerts are investigated rather than emailed. A failed circuit, a rogue device or a burst of blocked intrusion attempts becomes a ticket with a person on it.
What does network security include for a small business in Manhattan?
A managed firewall at the edge with rules and firmware maintained, segmentation so a compromised laptop or printer cannot reach the servers, secure Wi-Fi with individual credentials, remote access that checks the device, intrusion detection, ISP failover and 24/7 monitoring with an engineer acting on alerts. Equipment is Cisco Meraki or Fortinet, and the configuration is documented.
Can you connect our office to a second site safely?
Yes. Encrypted site-to-site links join the office to a warehouse, clinic or second floor, with segmentation on both ends and multifactor authentication on every remote path. Where a site has several circuits, Fortinet SD-WAN keeps traffic on the best one.
Do you have an office in Manhattan?
Our office is at 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215. On-site work is scheduled for your address, access requirements and support scope. 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. Ongoing agreements are month to month.
How can IT support help with New York data-security requirements?
The New York SHIELD Act (General Business Law § 899-bb) requires reasonable administrative, technical and physical safeguards for covered private information. The small-business standard considers the size and complexity of the business and the sensitivity of the information; it is not a general small-business exemption. NetSys can help document the relevant systems, controls and incident evidence within an agreed scope; legal notification decisions remain with your authorized business and legal team.
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.