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Full-Stack Network Visibility Starts at Layer 1



Mahlet’s L1FEguard™ delivers the foundation that traditional visibility solutions are blind to – raw signal telemetry, optical protocols, GCC management channels, and Ethernet Physical Coding Sublayer (PCS) monitoring.
By adding this real-time Layer 1 intelligence to your existing NPM, NDR, SIEM, and XDR tools, L1FEguard creates true end-to-end Full-Stack Network Visibility from the optical layer up.
If You Can’t See It, You Can’t – Secure It – Fix It – Optimize It


Download L1FEguard Datasheet

Introducing Mahlet’s Layer 1 Forensic Edge Guard (L1FEguard)

L1FEguard is the first platform purpose-built to enable true Full-Stack Network Visibility by illuminating the optical foundation of your network – data that no other visibility or security solution can see.
Infinity Infinity

Seamless Deployment

L1FEguard installs passively in parallel with your optical infrastructure, integrating directly into your existing visibility solution to analyze live OTN, SDH/SONET, and bulk Ethernet signals in real time with no risk to production traffic.
Attention Attention

Comprehensive Defense

L1FEguard delivers continuous Layer 1 intelligence across signal telemetry, optical protocols, management channels, and Ethernet PCS, closing dangerous blind spots and enabling true end-to-end visibility & security from the physical layer up.

Effortless Integration

L1FEguard feeds Layer 1 metadata, anomaly alerts, and raw signal snapshots directly into your SIEM, NDR, XDR, and NPM tools instantly making your existing network visibility architecture dramatically more powerful.

Full-Stack Network Visibility Solution Architecture

Key Capabilities

  • Optical signal telemetry monitoring to secure your fiber infrastructure.

  • Layer 1 optical signal protocol flow tracking & vulnerability monitoring.

  • Layer 1 Ethernet Physical Coding Sublayer (PCS) flow tracking & monitoring.

  • Ethernet output to follow-on systems like network packet brokers to enable L2-7 visibility.

  • Detection of covert C2/data channels and unauthorized management access.

  • De-tunneling of higher-layer protocols hidden in optical overhead.

  • Triggered snapshots for forensic analysis, compliance, and enhanced incident response.

  • Layer 1 flow tracking & anomaly detection output to preferred tools like SIEMs and XDRs.

Ready for True Full-Stack Network Visibility?

Full-Stack Network Visibility is no longer optional. Join leading organizations that have moved beyond partial visibility and are now protecting their infrastructure & operations from the ground up.

Download L1FEguard Datasheet