esp32_nat_router

Name: esp32_nat_router Review
Item: esp32_nat_router
Rating: 3.4
Author: Aaron Matthews

Skill Development Usable

Works inClaude Code

Usable Scanned — metadata only

Converts an ESP32 microcontroller into a network-level firewall and NAT gateway, enabling edge routing and traffic filtering without dedicated hardware.

Firmware that turns an ESP32 microcontroller into a WiFi NAT router/firewall with WireGuard VPN, port forwarding, DHCP reservations, ACL firewall rules, and live packet capture. Includes a beta MCP Bridge so AI assistants such as Claude can control the router over the Model Context Protocol. Configured via a web UI or serial console; supports up to 8 WiFi clients.

Local network traffic filtering in remote IoT deployments
Private mesh network gateway on minimal hardware
Development-stage firewall testing without server infrastructure

2,099 starsFreeQuick setup

Usable rating — This tool is functional but has notable gaps. Review the evaluation notes below before deploying.

Why it matters

Converts an ESP32 microcontroller into a network-level firewall and NAT gateway, enabling edge routing and traffic filtering without dedicated hardware.

Best for

Embedded systems engineers and IoT teams needing local network segmentation, traffic control, or offline routing on resource-constrained devices.

Works in

Claude Code Claude Cowork Claude Chat

Source

https://github.com/martin-ger/esp32_nat_router

By martin-ger

How to Get It

Option 1: Claude Desktop App (Code Mode)Click the + button next to the prompt box → Plugins → Add plugin. Search and click Install. Skills work in Claude Code only.

Option 2: Paste into Claude CodeCopy the command below and paste it into your conversation. Claude will install it.

Command

Flash the firmware to an ESP32 from the browser-based Web Installer at https://martin-ger.github.io/esp32_nat_router/ (requires a browser with Web Serial API), or with esptool using the pre-built binaries — see the Installation wiki page.

Tip: Paste this into a Claude Code conversation. Verify command matches your Claude Code version.

First thing to try

After installing, paste this into Claude:

Help me local network traffic filtering in remote IoT deployments

PrerequisitesAn ESP32 board (ESP32/ESP32-C3 etc.); a browser with Web Serial API support or esptool for flashingCostFree

Trust Signals Auto-scanned

Stars2,099Contributors14Last updated2026-06-27Known CVEsNone foundSources: GitHub Advisory Database + OSV.dev · Scanned 2026-08-18 · scanner vattempted-no-data

Community Pulse Active

Discussed on Hacker News, Reddit

made a scuffed ESP32 router because certain smart devices hated the long passwor — Reddit · 167 pts
Esp32 WiFi Repeater. Such a Wonderful Project. Thanks to Dev's. https://github.c — Reddit · 129 pts
Wake My PC Remotely Using ESP32 — Reddit · 10 pts

3 mentions across 1 sources

Reviewer notes

Auto-scanned review. These are observations, not a security certification.

catalog_hygiene stale-eval refresh: Scored from trust signals (evidence-eval-v1): 2,099 GitHub stars; 14 contributors; last commit 52d ago; license no license.

Things to check

Scanned, not hands-on tested — this entry was auto-scanned from public metadata (GitHub metrics, license, security flags). No reviewer has run it, and no tool-specific limitations have been documented yet.

How to evaluate tools before deploying →

Data shown here comes from public APIs and automated scanning. Reviewer notes reflect one person's experience. This is not a security certification or legal recommendation. Always evaluate tools according to your own organization's policies.

Evaluation Scores

Evaluation

Ease of Use

2/5

Versatility

5/5

Reliability

4/5

Security

3/5

Overall score3.40 / 5.00 UsableEvaluatedAug 2026

catalog_hygiene stale-eval refresh: Scored from trust signals (evidence-eval-v1): 2,099 GitHub stars; 14 contributors; last commit 52d ago; license no license.

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