STunnel

Simple SOCKS5/HTTP tunnel. SOCKS5 on client side provides NO AUTHENTICATION TCP/UDP proxy. Version 2.0 based on QUIC and TLS-TCP.

            .                      |                     .
            .                      f                     .
            .                      i                     .
  HTTP -----|                      r                     |------ outbound1
            |                      e                     |
            |                      |                     |
         client---------------- tunnel ----------------server--- outbound2
            |                      |                     |
            |                      w                     |
SOCKS5 -----|                      a                     |------ outbound3
            .                      l                     .
            .                      l                     .
            .                      |                     .

Version 2.0 status

Proxy type

• HTTP proxy
• SOCKS5 TCP proxy
• SOCKS5 UDP proxy

Tunnel type

• QUIC
• TLS-TCP(based on TLS on TCP)

Usage

1. ./certgen generates cert and private key
2. modify config/client.toml and config/server.toml
3. start server(./stunnel_server config/server.toml) and client(./stunnel_client config/client.toml) with the same cert

Browser connect client address(127.0.0.1:1080) via SOCKS5 or connect client address(127.0.0.1:8080) via HTTP.

Work with autoproxy and gatewaysocks

• autoproxy
• gatewaysocks

    ----------------                 -------------                     -----------
    | gatewaysocks | === TCP/UDP ==> | autoproxy | ===== TCP/UDP ====> | stunnel |
    ----------------                 -------------   |                 -----------
           ^                               ^         |                 -----------
           |                               |         |== TCP/UDP ====> | direct  |
           |                               |                           -----------
    -----------------             ------------------
    | other devices |             |   set system   |
    |  in the same  |             | proxy settings |
    |    router     |             |  to autoproxy  |
    -----------------             ------------------