Network Monitoring
Continuous network security monitoring for hospitals
You cannot stop what you cannot see. Immune gives hospitals complete, continuous visibility into every connection on the network — the foundation for catching ransomware while it is still moving quietly, before it reaches the systems that matter.
Immune's network monitoring watches every internal and external connection in real time, learns what normal looks like for your environment, and surfaces the lateral movement and command-and-control activity that signal an attack in progress.
Why the network is where ransomware reveals itself
A ransomware operator spends most of an attack moving, not encrypting. After gaining a foothold, they explore the network to find where the valuable systems and the backups live, they escalate their access, and they position themselves for maximum impact. All of that movement happens across the network — and it is often invisible to tools that only watch individual endpoints, especially when the attacker is using stolen credentials and legitimate administrative software. The network is where the quiet middle of an attack becomes observable, which is why continuous network monitoring is the foundation of any real ransomware defense.
In a hospital, this matters even more than in a typical enterprise. Clinical networks are dense, flat, and full of devices that cannot defend themselves. A single compromised system can often reach far more than it should. Without pervasive visibility, an attacker can wander for days. With it, the same attacker lights up the moment they start behaving abnormally — scanning for open shares, reaching toward the imaging archive, or opening a channel to an external command server.
See it in action
Continuous visibility into every connection and flow — internal and external. The foundation that makes every other detection capability precise.
Features
What network monitoring provides
Full connection visibility
Sees which systems talk to which, on what protocols, in what volume, and for how long.
East-west coverage
Watches internal system-to-system traffic where ransomware actually spreads.
Protocol behavior analysis
Flags anomalies in file-sharing, remote-desktop, and other protocols attackers abuse.
External-connection watch
Detects connections to unfamiliar destinations that suggest command-and-control or exfiltration.
Per-device baselines
A normal-behavior profile for each system, including agentless medical devices.
High-throughput, low overhead
Built to watch busy hospital networks without becoming a bottleneck.
How it works
How network monitoring works
Observe all traffic
Immune continuously watches every connection and flow across the hospital network, internal and external.
Learn the baseline
It builds a living model of how your environment normally communicates, per system and per device.
Measure against normal
Every connection is compared to that baseline, so deviations — scans, beaconing, abnormal file-sharing — stand out.
Surface the signal
Suspicious activity is raised immediately and enriched with context about what is happening and where.
Feed the response
Signals flow into the detection engine and can trigger containment, rather than sitting in a console.
Advantages
The advantages of pervasive network visibility
Catches the quiet middle
Sees lateral movement while there's still time to contain without disruption.
Covers the uncoverable
Protects agentless medical devices that endpoint tools cannot watch.
Fewer blind spots
Correlated with host and identity signals so living-off-the-land attacks still surface.
Drives action, not alerts
Monitoring feeds the response loop directly, so what it sees is acted upon in seconds.
On-premises capable
Can run entirely within your environment for privacy and data sovereignty.
No performance penalty
High-throughput design keeps clinical workflows fast.
Use cases
Where network monitoring matters
Lateral-movement detection
Spot an attacker spreading from a foothold toward critical systems.
Command-and-control discovery
Catch the beaconing of a remotely controlled system inside the network.
Medical-device visibility
Monitor the thousands of connected devices no endpoint agent can see.
Exfiltration awareness
Notice unusual outbound data movement that signals double-extortion staging.
Common questions
Network security monitoring, answered
+What is network security monitoring?
Network security monitoring is the continuous observation and analysis of traffic across a network to detect threats, anomalies, and policy violations. In healthcare it is essential because attackers move between systems — often invisibly to endpoint tools — and that movement shows up on the network.
+How does network monitoring detect ransomware?
Ransomware generates distinctive network behavior before and during an attack: reconnaissance scans, unusual east-west connections, command-and-control beaconing, and abnormal file-sharing activity. Immune baselines what is normal for your environment and flags these deviations in real time.
+What is east-west traffic and why does it matter?
East-west traffic is the communication between systems inside your network, as opposed to north-south traffic crossing the perimeter. Most ransomware spreads east-west, so monitoring internal traffic is critical to catching an attack that has already gotten past the perimeter.
+Does Immune monitoring slow down the network?
No. Immune's monitoring is built for high-throughput environments and runs with minimal overhead, observing traffic without becoming a bottleneck in clinical workflows.
+Can it monitor devices that can't run an agent?
Yes — that is a key strength. Because monitoring happens at the network level, it covers the medical devices and legacy systems that endpoint tools cannot, giving visibility across the entire hospital.
+Is network monitoring enough on its own?
It is the essential foundation, but it is strongest as part of a loop. Immune correlates network signals with host, identity, and deception signals so an attack is caught whether it shows up on the wire or on a host, and so a signal leads to a response rather than just an alert.
Explore the platform
Related capabilities
See what's really moving on your network
Book a demo and watch Immune surface lateral movement and command-and-control activity in real time — across servers, workstations, and agentless medical devices.