Managed Network Security Services for Enterprise IT
NetNXT manages the security of the network your business runs on — firewalls, secure gateways, VPN and ZTNA access, segmentation, and the links between your offices, data centres and cloud. We configure it, monitor it, maintain it and improve it, so your IT team stops firefighting infrastructure.
- Firewalls, secure access and segmentation managed as one estate
- 24×7 monitoring, documented change control and named escalation
- Runs on the infrastructure you already own — no rip-and-replace
30-minute scoping session · No commitment · Works with your existing estate
Scope is agreed in writing before onboarding — take all of it, or only the parts your team doesn't want to carry.
Most Network Security Problems Are Operations Problems
Almost nobody buys managed network security because they lack security products. They buy it because the products they have were configured by four different people, reviewed by nobody, and nobody has looked at the firewall rulebase since the person who wrote it left.
These are the six situations organisations describe to us most often before they engage.
No single view of the network
Firewalls in three locations, an SD-WAN controller, a cloud VPC and a separate VPN concentrator — each with its own console. Nobody can answer "what changed last week" without logging into four systems.
Firewall rules nobody owns
Rulebases accumulate. Temporary exceptions become permanent. Objects get orphaned. Over a few years the policy stops matching how the business actually works, and every change gets riskier.
Branches that were never really designed
New offices get connected the fastest way possible and inherit whatever equipment was available. Security posture ends up different at every site, and the weakest one defines your exposure.
Downtime and security pull the same team
The person who patches the firewall is the person restoring the link when it drops. When both happen in the same week, maintenance is what gets deferred.
Change management by WhatsApp
Config changes made under pressure, undocumented, on live infrastructure. When something breaks two weeks later, nobody can trace what was altered.
Hybrid work broke the perimeter model
Traffic that used to stay inside the network now goes straight from a laptop in someone's home to a SaaS application. The controls at the office gateway no longer see most of it.
What NetNXT Manages for You
Scope is agreed before onboarding and written down. These are the areas we most commonly take on — you can take all of it, or only the parts your team does not want to carry.
Firewall and perimeter management
Day-to-day ownership of your firewall estate — policy and rule changes, object hygiene, firmware and signature updates, HA and failover verification, and periodic rulebase review to remove what is no longer needed. Unreviewed firewall policy is where most avoidable exposure sits, and it is the first thing we clean up.
Secure access — VPN, ZTNA and remote users
Configuration and ongoing management of remote access, whether that is traditional VPN or a zero-trust access model. Includes access policy by user and group, device posture requirements where the platform supports them, onboarding and offboarding of access, and connector or gateway health.
Network segmentation
Design and enforcement of separation between environments that should not see each other — corporate, guest, production, OT and lab. Segmentation is the control that decides whether an incident stays in one VLAN or reaches everything. We implement it in stages so nothing breaks in production.
Secure gateways and traffic control
Management of secure web gateway, content and DNS filtering, and — where you run a SASE architecture — the policy layer across it. Covers category and application policy, exception handling, TLS inspection configuration, and tuning when a legitimate business application gets blocked.
Network monitoring and performance
Continuous monitoring of device availability, link health, throughput, latency and utilisation across sites and connectivity. Performance and security are the same job here: the saturated link and the misrouted tunnel surface in the same place, and both reach us before they reach your users.
Maintenance, patching and change control
Scheduled firmware and patch cycles, configuration backups, documented change windows, and a record of every change made to your infrastructure — what was altered, by whom, when, and why. This is the least glamorous item on the list and the one clients tell us they notice most.
How the Service Runs Day to Day
Five disciplines, running continuously. This is what "managed" actually means in practice.
Monitor
One place to look
Device, link and traffic monitoring across every site in scope, 24×7. Availability, performance, configuration drift and relevant security events surface in one place rather than in six consoles. Alerting thresholds are tuned to your environment during onboarding so the noise level stays workable.
Protect
Controls kept in the state they were designed for
Agreed security controls kept correctly configured and current — firewall policy, access rules, segmentation, gateway policy, firmware. Protection here is not a product; it is the discipline of keeping what you already own in the state it was designed to be in.
Respond
An engineer, not a forwarded alert
When something fires — a link down, a device unreachable, a policy failure, a suspicious traffic pattern — it is triaged by an engineer. Issues within our scope are worked directly. Anything that needs your decision, or that indicates a security incident beyond network scope, is escalated through an agreed path with the context already attached.
Optimise
Reviewed on a cycle, not after an outage
Configuration and capacity are reviewed on a cycle, not only when something breaks. Rule cleanup, routing and policy improvements, capacity headroom before it becomes an outage, and recommendations where the architecture is working against you.
Report
You never have to ask what we did
A regular written report and a service review with your team: what was monitored, what changed, what was escalated and how it closed, what we recommend next. You should never have to ask what we did last month.
Not sure which of these your team should keep and which to hand over? That is what the scoping call is for.
Why Organisations Choose NetNXT
Five reasons IT leaders give us when they move network security operations across — none of them a superlative.
One partner for the network and the security on it
Most providers do one or the other. Network operations and security operations sit in the same team here, so a performance problem and a policy problem do not become two tickets with two vendors blaming each other.
We work with the infrastructure you already have
As an implementation and managed-services partner across Fortinet, Cato Networks, Cisco Meraki and Twingate, we manage mixed estates as they are. Where a replacement genuinely makes sense we will say so — and say why — but a hardware refresh is not the price of entry.
Engineers who deploy, not just monitor
The team managing your environment is the team that implements. That means changes get made rather than recommended, and the person on your escalation call has configured the platform you are running.
Built for multi-site Indian operations
Branch offices on mixed connectivity, plants with OT segments, offices that opened faster than IT could plan for. This is the environment our delivery is shaped around, with operations teams in Delhi, Gurugram and Bengaluru.
Scope you can define and change
Take the whole network or just the firewall estate. Add sites, add a new gateway, hand over an area your engineer used to own when they leave. The service is scoped in writing and adjusted as your environment changes.
How Onboarding Works
Five stages. The goal of the first three is that nothing changes for your users while everything changes for your IT team.
Assess
We review what you have — devices, topology, sites, connectivity, current policy and where the gaps are. You get the findings whether or not you engage us. This is also where scope and responsibility boundaries get drawn.
Plan
A written service scope: which devices and sites we manage, which disciplines we cover, escalation paths and contacts, change windows, reporting cadence, and what stays with your team. Nothing ambiguous goes into the run phase.
Onboard
Devices and sites are brought under monitoring and management in a defined sequence, usually site by site rather than all at once. Configuration backups are taken, baselines documented, alerting tuned. Existing issues found during onboarding are logged and prioritised, not quietly inherited.
Operate
The service runs: monitoring, change management, maintenance, triage and escalation, as scoped. Your team has a named route in and a documented path out.
Review and improve
Scheduled service reviews covering incidents, changes, capacity and recommendations — plus rulebase and architecture review on a longer cycle. Scope adjusts as your network does.
Multi-Site Healthcare Provider: One Architecture Across Every Branch
A multi-location fertility and reproductive medicine provider was running a different network security setup at almost every site. Ageing firewalls, no consistent segmentation between clinical systems, lab devices and guest wireless, and no continuous monitoring — while adding patient portals, EMR access and teleconsultation on top.
NetNXT redesigned the network security architecture across locations: centralised firewall management, segmentation separating clinical, lab, corporate and guest traffic, intrusion prevention and web and email filtering at the perimeter, and 24×7 managed monitoring across the estate. Branch performance was tuned in the same programme, because clinicians were feeling the network before they were feeling the security.
Read the full case study- 63%Reduction in high-risk security incidents
- ~70%Fewer unauthorised internal access attempts
- 40%Improvement in branch network performance
“NetNXT transformed our network security with a well-structured SASE implementation. Remote access became faster and more secure, and we finally replaced multiple point tools with a single unified platform.”
What You Get After Go-Live
The part of a managed service that decides whether you renew. Here is how it actually works.
A named team, not a queue
You work with the same engineers month to month — people who know your topology, your change windows and which application breaks when TLS inspection is turned up. Escalation goes to a named route with context, not to a general support address.
24×7 monitoring and escalation
Monitoring and first-line response run around the clock. The escalation matrix — who is contacted, in what order, for which severity, and at what hour — is agreed during onboarding and documented, so nobody is deciding at 2 a.m. who to call.
Documented change management
Changes are requested, reviewed, scheduled into agreed windows and recorded — with configuration backups before and after. You keep an audit trail of every alteration to your network security infrastructure, which is also what makes ISO 27001 and SOC 2 evidence requests straightforward rather than archaeological.
Reporting and service reviews
A regular report covering availability, incidents, changes, escalations and recommendations, plus a scheduled review with your team. Where your organisation is subject to CERT-In incident-reporting directions or the DPDP Act, our monitoring and records support that reporting — the filings and the regulatory decisions remain yours.
In-House vs a Managed Network Security Provider
Managed is not automatically the right answer. If you have a network engineer who owns this, documentation that is current, and coverage outside business hours, an in-house model works. Here is the honest comparison.
| Consideration | In-house | NetNXT managed network security |
|---|---|---|
| Coverage outside working hours | Depends on on-call arrangements and who is available | 24×7 monitoring and first-line response |
| Multi-site consistency | Depends on whether one person owns standards across all sites | One configuration standard applied across the estate |
| Firewall and policy review | Usually deprioritised under day-to-day workload | On a defined review cycle |
| Change documentation | Varies by team discipline | Documented as part of the service |
| Platform depth | Limited to the platforms your team has worked on | Engineers across Fortinet, Cato, Meraki and Twingate |
| Key-person risk | High — the network often sits with one person | Team-based; knowledge stays with the service |
| Cost shape | Salaries, training, tooling, on-call | Predictable monthly service cost |
| Control over decisions | Full | Full — architecture decisions stay yours, execution moves to us |
| Speed for the unusual request | Immediate, if the person is free | Within agreed change process |
The trade-off is real: an internal engineer sitting in your office will always be faster for the ad-hoc request. What a managed service buys is the work that keeps getting deferred — review, patching, documentation, and someone watching at 3 a.m.
Related Insights
Explore Our Related Services
SASE
A converged architecture combining network and security at the edge. Where you run SASE, managed network security is the team operating its policy layer day to day.
Secure Web Gateway
Web and application traffic control for users wherever they work — one of the controls managed under this service.
ZTNA
Application-level access that replaces broad network-level VPN access. Managed network security covers its configuration, policy and connector health.
Managed Detection & Response
Threat detection, hunting and analyst-led response across endpoints, identity and cloud. This service keeps the network correctly configured; MDR finds and stops what is happening inside it.
Security Operations Center
Continuous security monitoring, triage and escalation as a function. The network telemetry this service produces feeds it.
Managed Security Services
NetNXT's broader managed security scope. Managed network security is the network-infrastructure function within it.
Frequently Asked Questions
An ongoing service in which a provider takes operational responsibility for an organisation's network security controls — firewalls, secure gateways, VPN and zero-trust access, segmentation and site connectivity. The provider handles monitoring, configuration and rule management, patching, change control and first-line response, while the organisation keeps ownership of its network and its decisions.
Scope is agreed in writing before onboarding. It commonly covers firewall and perimeter management, secure remote access (VPN or ZTNA), network segmentation, secure web gateway and traffic policy, network and link monitoring, scheduled maintenance and firmware patching, documented change management, escalation, and regular reporting and service reviews. You can take the full scope or only the areas your team does not want to carry.
Firewalls, secure web gateways, SD-WAN and SASE edges, VPN concentrators and ZTNA connectors, switching and wireless infrastructure, and the connectivity between sites and cloud. We are an implementation and managed-services partner across Fortinet, Cato Networks, Cisco Meraki and Twingate, and we manage mixed estates built on equipment you already own. Exact coverage for your environment is confirmed during the assessment.
Yes. Multi-site is the normal case rather than the exception — branch offices on mixed connectivity, manufacturing sites with segmented OT networks, data centre and cloud environments alongside each other. Onboarding is usually sequenced site by site so there is no single high-risk cutover.
Alerts are triaged by an engineer rather than forwarded to you. Issues inside the managed scope — a device failure, a policy problem, a link fault, a misconfiguration — are worked directly. Anything indicating a security incident beyond network scope is escalated through the agreed path with investigation context attached, and where you also run managed detection and response or a managed SOC with us, it moves into that team without a handover gap.
No. The service is designed to run on the infrastructure you already have. Where equipment is genuinely end-of-support or architecturally limiting, we will tell you and explain why — but a hardware refresh is not a condition of the service.
No service does. What it provides is the evidence and operational discipline that compliance work depends on: documented change records, configuration backups, monitoring records, incident logs and regular reporting — which support obligations under frameworks such as ISO 27001, SOC 2, the DPDP Act and CERT-In directions. Reporting decisions and regulatory filings remain your organisation's responsibility. Where you need the control framework itself managed, that is compliance automation.
Book a Network Security Assessment
A 30-minute working session with a NetNXT network security engineer. We walk through your current setup — sites, devices, connectivity, access model and where the gaps are — and outline what a managed scope would cover and what would stay with your team. You get the findings whether or not you go further.
No commitment. No obligation to replace anything you already run.