fgrok - Reverse Tunnel in Go

fgrok is a reverse tunnel service that allows exposing local services to the internet through an intermediary server.

Features

• HTTP/HTTPS tunnels with custom subdomains support
• Generic TCP tunnels
• Token-based authentication
• Automatic reconnection
• Detailed logging
• YAML configuration

For detailed installation and systemd service configuration, see INSTALL.md.

Usage

Server

fgrok server --config .fgrok.yaml

Client

fgrok client --config .fgrok.yaml

Architecture

Client <-> [fgrok Client] <-> [fgrok Server] <-> Internet

Main Components

• Client: Establishes connection with server and manages tunnels
• Server: Receives connections and routes traffic
• Tunnels: HTTP and TCP
• Interceptor: Authentication middleware
• Mediator: Mediator pattern for internal communication

Requirements

• Go 1.20+
• TLS certificates (for HTTPS)

License

MIT - See LICENSE for details.