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GVPFastTunnel / FastTunnel

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License Build status Nuget Nuget

README | 中文文档

This project supports any commercial and secondary development activities, but seriously despises plagiarizing and copying the code, implementation scheme or architecture of this project and repackaging them into their own open source works.

What is FastTunnel?

  • FastTunnel is a high-performance cross-platform intranet penetration tool. With it, you can expose intranet services to the public network for yourself or anyone to access.
  • Unlike other penetration tools, the FastTunnel project is committed to creating an easy-to-extensible and easy-to-maintain intranet penetration framework.
  • You can build your own penetration application by referencing the nuget package of FastTunnel.Core, and target the business extension functions you need.

Official website : https://suidao.io

The penetration platform developed based on this framework, if you need intranet penetration, you can register and use it directly, eliminating the cost of building and maintaining yourself. But do not use this service for important items.


GitHub : FastTunnel
Gitee: FastTunnel

If helpful, click on ⭐Star to support this project, please submit an issue if you have needs and bugs, and welcome coder to PR



What can FastTunel do?

  • Remote intranet computer Windows/Linux/Mac
  • Use a custom domain name to access intranet web services (usually used for WeChat development)
  • Port forwarding/port mapping, access services provided by any port on the intranet mysql, redis, ftp, etc.
  • p2p penetration
  • Support binding multiple domain names to access intranet services
  • Support domain name whitelist restriction
  • Support client identity verification


  1. Download the corresponding program on the releases page
  2. Modify the client and server configuration files according to your needsappsettings.json
  3. Run FastTunnel.Server
  4. Run FastTunnel.Cient

Install FastTunel.Sever using Docker Engine

Configuration files and log files are mounted through volume. If this image has been run before, docker may not update to the latest image. Please delete the existing image manually, and then execute the following command

docker run --detach \
  --publish 1270:1270 --publish 1271:1271 \
  --name FastTunnel \
  --restart always \
  --volume /var/FastTunnel/config:/app/config \
  --volume /var/FastTunnel/Logs:/app/Logs \

Run on Linux/Mac os?


Double click directly FastTunnel.Client.exe to run


chmod +x FastTunnel.Client


click directly FastTunnel.Client to run

Configuration example

1. Use a custom domain name to access intranet web services

  • For example, you have a server with a public IP address of, and you have a domain name with a top-level domain name of abc.com, you want to visit a website on the intranet by visiting test.abc.com

  • You need to add a DNS resolution for the domain name address, the type is A, the name is *, and the ipv4 address is, so that all domain names of *.abc.com will point to’s server, because the default http port of FastTunnel is 1270, so you need to visithttp://test.abc.com:1270

  • If you don't want to bring the port number every time you visit, you can use nginx forwarding.

http {
    # add resolver 

    # set *.abc.com to 1270 port
    server {
      server_name  *.abc.com;
      location / {
         proxy_pass http://$host:1270;
         proxy_set_header   Host             $host;
         proxy_set_header   X-Real-IP        $remote_addr;
         proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;

      # 可选
      error_log /var/log/nginx/error_ft.log error;
  • If the domain name configured on the server is ft.suidao.io, then access the local site through the subdomain name test.ft.suidao.io:1270, the IIS configuration is as follows: img1

2. Remote intranet computer Windows/Linux/Mac

The client configuration is as follows, there are two hosts in the intranet, and the ip is as follows: appsettings.json

 "ClientSettings": {
    "Common": {
      "ServerAddr": "xxx.xxx.xxx.xxx",
      "ServerPort": 1271
    "SSH": [
        "LocalIp": "", // linux pc
        "LocalPort": 22,            // ssh default port
        "RemotePort": 12701
        "LocalIp": "", // windows pc
        "LocalPort": 3389,          // windows default port for Remote
        "RemotePort": 12702

remote intranet linux host by ssh (ip:

Assuming that the user name of the intranet host is root, the server ip is x.x.x.x, and the two hosts that access the intranet are as follows

ssh -oPort=12701 root@x.x.x.x

remote desktop Windows host by mstsc (ip:

Controlled terminal setting

  • Open cmd and enter the command sysdm.cpl in the pop-up dialog box and select Allow remote connection to this computer


Control terminal settings

  • Open cmd and enter the command mstsc, open the remote dialog box, enter x.x.x.x:12701 in the computer input box of the dialog box, and then specify the user name and password to remote the windows host of the intranet img1


  • install vs2019 last version
  • install .net5 or higher https://dotnet.microsoft.com/download/dotnet/5.0
  • add test.test.cc in system host file
  • run fasttunnel.server
  • run fasttunnel.client


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Apache License 2.0

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