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Exposing a Local Service Online for Real-World Testing: the MCP Case with frp

Exposing a Local Service Online for Real-World Testing: the MCP Case with frp

08 Jun 2026 5 min read frp
You built something on http://localhost:3000. It works on your machine. Then the real world asks a question you can't answer from localhost: can someone — or something — out there actually
GPON SFP Module Pinout — SFP UART (RX / TX) Reference

GPON SFP Module Pinout — SFP UART (RX / TX) Reference

05 Jun 2026 3 min read sfp
Part of the GPON SFP serial-console guide. GPON / XGS-PON SFP "ONU stick" modules run a full Linux SoC, and most expose a serial console (UART) on their edge connector — handy to
Flashing a Huawei GPON SFP Stick with Carlito Firmware

Flashing a Huawei GPON SFP Stick with Carlito Firmware

08 Feb 2026 3 min read sfp
If you've ever wanted to take full control of your GPON SFP module, you're not alone. Huawei's GPON sticks (like the popular MA5671A) are well-known for their
When Cloud Cameras Go Dark: Lessons From Today’s Eufy Outage

When Cloud Cameras Go Dark: Lessons From Today’s Eufy Outage

03 Jan 2026 4 min read eufy
This morning I woke up to a familiar modern horror story. The Eufy app could not load live video from my cameras. The app just spun. The servers behind the scenes were having
When your SFP module keeps rebooting: the problem is often the power supply

When your SFP module keeps rebooting: the problem is often the power supply

20 Dec 2025 2 min read
You plug your SFP/ONU module into your USB-to-TTL adapter, open your serial terminal, and suddenly you see this repeating over and over again: U-Boot 2011.12-lantiq-gpon-1.2.24 (Nov 03 2014 -
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