GitHub project Rustunnel offers a Rust-based alternative to ngrok, exposing local services behind NATs or firewalls to the public internet. It supports both self-hosted and managed cloud deployments, utilizing encrypted WebSocket connections with TLS termination for secure HTTP and TCP proxying. Key features include a live dashboard, Prometheus metrics, and audit logging.

The project provides detailed documentation covering architecture, local development, production deployment on Ubuntu via systemd, and Docker options. Users can obtain an auth token via GitHub issue to access the public edge server at edge.rustunnel.com.