OT networks in utility substations and manufacturing plants often rely on older, legacy equipment. This focus on legacy systems stems from a priority on maintaining production uptime. Shutting down a location for network or security updates can be extremely challenging. Over time, the mindset of "if it’s not broken, don’t fix it" has become the norm.
However, with cybercriminals increasingly targeting critical infrastructure, critical infrastructure owners must adopt security solutions like OT risk and anomaly detection. The problem? Deploying these solutions is difficult due to legacy media connections such as 100Base-FX and 100Base-LX, making upgrades nearly impossible without significant obstacles.
Garland Technology’s 100BASE-FX and 100BASE-LX Hardware Data Diodes are engineered to help make OT security sensors compatible with the network. Additionally, these Hardware Data Diodes can aggregate or breakout unidirectional copies of the inputs in Ports A and B.

Key Features
- Media conversion: 100Base-FX to 1G Copper and 100Base-LX to 1G Copper
- Physical hardware separation ensures unidirectional traffic between network connections
- Supports breakout and aggregation modes
- Easy configuration via DIP switches on back
- No IP address, no Mac address
- No subscription, port, feature, software, or license fees
- Durable, metal chassis
- Single power supply
- DIN Rail mount available
Benefits
- Modernize legacy networks with 100Base-FX or 100Base-LX network connections by adding the latest security solutions to the network
- Eliminate bidirectional traffic flow by enforcing one-way data flow for SPAN links
- Small form factor for space constrained deployments
- TAPs are invisible to adversaries
Specifications
Part # |
Network Speed |
Ports |
Power |
---|---|---|---|
P100FXCASP |
100M |
(2) 100 Base-FX MMF Network Ports
|
AC |
P100LXCASP |
100M |
(2) 100 Base-LX SMF Network Ports
|
AC |
100M
(2) 100 Base-FX MMF Network Ports
(2) Copper Monitoring Ports
AC
100M
(2) 100 Base-LX SMF Network Ports
(2) Copper Monitoring Ports
AC
Resources

AggregatorTAP: 100Base-FX
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