Most companies discover a breach weeks or months after it happened. Do you know where yours stands?
L4Layer four of nine

Network Security

The perimeter stopped being the office. This layer controls traffic where it actually happens: between the user, the internet, and cloud applications.

  • Zero Trust access
  • Web filtering
  • Secure email
  • Cloud control
Equipment room in an office building seen along the wall, with a closed mesh-door cabinet and a cable tray running down from the ceiling to its top.
How it gets in

VPN gives access to the whole network; the attacker takes advantage of that too.

When someone connects via VPN with a stolen credential, they're inside everything. Zero Trust access changes the approach: the application is published, not the network, and each session is evaluated on its own. Meanwhile, email and browsing remain the two paths where most of the problem still gets in.

Signs you're missing this layer
  • VPN gives access to the entire internal network once connected.
  • There's no visibility into which cloud services people use on their own.
  • The email filter is whatever came included and no one has tuned it.
Scope

What the layer includes

Every component is implemented, configured, and left under SOC watch. We don't hand over bare licenses.

Zero Trust access

Applications published one by one, without exposing the network. Each session is evaluated by identity, device, and context.

Web filtering

Blocking malicious destinations and inspecting encrypted traffic, with the same policy inside and outside the office.

Email security

An added layer on top of what your platform already includes, aimed at targeted fraud and domain spoofing.

Cloud service control

Visibility into which applications are actually used and what data flows to them, with data-loss-prevention rules.

Operations

The layer isn't installed and forgotten.

Everything this layer generates flows into the SIEM, gets correlated with the rest of the stack, and is reviewed by an analyst on shift. What follows is the same across all nine layers.

Classified in under a minute

The Triage Agent reviews every event that comes in, at any hour, and discards the noise before it reaches a person.

Confirmed by an analyst

The decision to contain, isolate, or escalate is made by a person with context on your operation, not an automation.

It gets logged

Every action on this layer enters the period's report, with time, owner, and outcome.

Two Lynxsource SOC analysts, one seated and one standing beside her, looking together at a status dashboard on the monitor.
What you receive
  • Map of published applications and who accesses each one.
  • Report of blocked destinations and stopped email.
  • List of unauthorized cloud services in use.
FAQ

What people ask about this layer

Does the VPN need to go away immediately?

No. They coexist during migration, and the VPN is retired once every application is published.

Does inspecting encrypted traffic have legal implications?

Yes, and they're documented. We define with you which categories are excluded from inspection, like banking or health.

Does it work for people working from home?

That's exactly the scenario it's designed for. The policy is the same regardless of where the user is.

Does it replace Microsoft 365's filter?

It complements it. The added layer catches targeted fraud that the native platform lets through more often.

Let's see how this layer stands in your operation.

A free review, no strings attached. We'll tell you what we found, what to fix first, and what to expect.

Request a free assessment

We respond within one business day. Ecuador, Colombia, Bolivia, the United States, and Canada.

WhatsApp