Compare Trout & Nozomi Networks
Nozomi Networks gives you OT visibility. Access Gate gives you visibility plus enforcement. Monitoring and zero-trust access control in one on-premise appliance or VM.
Visibility without enforcement leaves gaps
OT monitoring tools tell you what is happening on your network -- which devices are communicating, which protocols are in use, and where anomalies appear. But monitoring alone does not stop unauthorized access, prevent lateral movement, or enforce segmentation policies. If you can see a breach but can't stop it, visibility alone isn't enough.
Monitoring with inline enforcement
Access Gate combines passive discovery with inline enforcement capabilities. It monitors OT traffic and enforces segmentation, access policies, and remote session controls from a single on-premise appliance or VM. No cloud, no agents needed.
Passive OT monitoring and threat detection
Nozomi Networks specializes in passive network monitoring for OT environments. Its Guardian sensors provide deep protocol analysis, asset discovery, and threat detection. Enforcement relies on integration with third-party firewalls and NAC platforms.
| Feature | Access Gate | Nozomi Networks |
|---|---|---|
| Asset discovery | ||
| OT threat detection | Anomaly-based | Deep protocol analysis |
| Network segmentation | Monitoring only | |
| Access control | ||
| Secure remote access | ||
| OT protocol inspection | ||
| SIEM integration | ||
| Cloud dependency | Fully on-premise | Cloud option available |
| Deployment mode | Inline + passive | Passive only |
| Compliance automation | Reporting-focused |
Monitoring + enforcement
Nozomi Networks is a leader in passive OT monitoring and threat detection. Access Gate adds what Nozomi does not -- inline enforcement, segmentation, and zero-trust access control. You get visibility and the ability to act on it from the same appliance or VM.
Deployment flexibility
Access Gate supports both inline and passive deployment modes. You can monitor traffic passively during discovery and switch to inline enforcement when you are ready, without adding hardware.
Single appliance or VM
Access Gate consolidates monitoring, segmentation, remote access, and access control into one on-premise appliance or VM. With Nozomi, enforcement requires integrating separate products such as firewalls or NAC systems.
Access Gate vs Nozomi Networks FAQ
Monitor and enforce from the same appliance or VM
Choose Access Gate when you need to go beyond monitoring. If your goal is to segment OT networks, enforce access policies, and control remote sessions -- all from a single appliance or VM without cloud connectivity -- Access Gate is the right fit.
Nozomi Networks is a strong choice when deep passive monitoring, advanced threat detection, and broad OT protocol coverage are your top priorities. It is well-suited for environments where enforcement is already handled by existing firewalls or NAC solutions.
Yes. Some teams deploy Nozomi for its deep threat intelligence and protocol analysis alongside Access Gate for enforcement and segmentation. The two products cover different parts of the OT security stack and integrate through standard syslog and SIEM workflows.
Access Gate uses a single-appliance pricing model that includes monitoring, segmentation, access control, and remote access. Nozomi typically prices per sensor and may require additional licenses for advanced analytics or cloud management features.