{"repo":"x011/smtp-tunnel-proxy","free":true,"listed":false,"github":"https://github.com/x011/smtp-tunnel-proxy","clone":"git clone https://github.com/x011/smtp-tunnel-proxy.git","description":"A high-speed covert tunnel that disguises TCP traffic as SMTP email communication to bypass Deep Packet Inspection (DPI) firewalls.","language":"Python","stars":1784,"topics":["censorship-circumvention","censorship-resistance","covert-tunnel","deep-packet-inspection","encryption","evasion","network-security","proxy","python","smtp"],"license":"GPL-3.0","category":"networking-infra","readme_excerpt":"📧 SMTP Tunnel Proxy A high-speed covert tunnel that disguises TCP traffic as SMTP email communication to bypass Deep Packet Inspection (DPI) firewalls. --- 🎯 Features Feature Description --------- ------------- 🔒 TLS Encryption All traffic encrypted with TLS 1.2+ after STARTTLS 🎭 DPI Evasion Initial handshake mimics real SMTP servers (Postfix) ⚡ High Speed Binary streaming protocol after handshake - minimal overhead 👥 Multi-User Per-user secrets, IP whitelists, and logging settings 🔑 Authentication Per-user pre-shared keys with HMAC-SHA256 🌐 SOCKS5 Proxy Standard proxy interface - works with any application 📡 Multiplexing Multiple connections over single tunnel 🛡️ IP Whitelist Per-user access control by IP address/CIDR 📦 Easy Install One-liner server installation with systemd service 🎁 Client Packages Auto-generated ZIP files for each user 🔄 Auto-Reconnect Client automatically reconnects on connection loss 📚 For in-depth technical details, protocol specifications, and security analysis, see TECHNICAL.md. --- ⚡ Quick Start 📋 Prerequisites - Server : Linux VPS with Python 3.8+, port 587 open - Client : Windows/macOS/Linux with Python 3.8+ - Domain name : Required for TLS certificate verification (free options: DuckDNS, No-IP, FreeDNS) --- 🚀 Server Setup (VPS) Step 1️⃣: Get a Domain Name Get a free domain pointing to your VPS: - 🦆 DuckDNS - Recommended, simple and free - 🌐 No-IP - Free tier available - 🆓 FreeDNS - Many domain options Example: myserver.duckdns.o","default_branch":null,"files":null,"tree":[],"storefront":"/r/x011","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/x011/smtp-tunnel-proxy/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}