Termtunnel

Termtunnel is a tool that allows you to create a tunnel via multiple hops or fight against intranet isolation in a very simple way. As lrzsz can, termtunnel supports not only file transfer but also network proxy.

Quickstart

You must ensure that the termtunnel binary exists on both the local and remote first.

Please use termtunnel to open any locally terminal application such as ssh, bash, etc.

sh-3.2$ >> termtunnel ssh root@19.95.02.23

After running, the terminal output is the same as without the termtunnel prefix, and you can keep your normal usage habits.

sh-3.2$ >> termtunnel ssh root@19.95.02.23
root@host:~# echo loulou
loulou
root@host:~# uname -a
Linux 5.10.0-11-amd64 #1 SMP Debian 5.10.92-2 (2022-02-28) x86_64 GNU/Linux

When a tunnel needs to be established, just run command termtunnel -a on that remote host.

For example, you can execute termtunnel ssh root@19.95.02.23 locally, then start /tmp/termtunnel -a on the ssh host to enter the termtunnel shell

In the termtunnel shell, you are allowed to download and upload files or create socks5 proxy.

So how to use the console? See Use case please.

And, If you want to speed up the process, you can use ONESHOT mode to started immediately without entering a session.

sh-3.2$ >> termtunnel ssh root@19.95.02.23
root@host:~# /tmp/termsocks -a
termtunnel>> help

Install

• MacOS

  • brew install beordle/tap/termtunnel

• Linux

  • Provide prebuilt static binaries to run. See lastest releases

• Windows

  • Provide prebuilt binaries to run. Download

• Android or iOS

  • use Termux on Android, iSH on iOS to run Linux binary.

Use case

This documentation may be out of date, please refer to the output of the help command if necessary.

Download a file to local

type download path/to/file and Enter, choose a folder to save.

Upload a file to remote

type upload and Enter, choose a file to upload.

Share local internet with remote

type remote_listen 127.0.0.1 8000 127.0.0.1 0 and enter

now, the port 8000 is a socks5/http mixed proxy server. well, open new a window to use it.

eg. You can use it by curl: curl --socks5 127.0.0.1:8000 https://google.com and curl -x 127.0.0.1:8000 https://google.com or, let yum use it.

Share Intranet host 10.11.123.123's VNC port 5100 with local

type local_listen 127.0.0.1 3333 10.11.123.123 5100 and enter

now, the port 3333 on your local compute is 10.11.123.123's VNC port.

use a local GUI VNC client to connect it!

ONESHOT mode

you can directly run termtunnel -- local_listen 127.0.0.1 80 127.0.0.1 0, termtunnel -- rz or termtunnel -- sz path\to\file. in terminal, the corresponding action will be started immediately without entering a session.

Build from Source

Linux/MacOS

cmake .
make

Windows

Please use MSYS2 to compile under windows.

pacman -Syu libuv libuv-devel cmake make 
pacman -Syu openssh  # optional
cmake .
make

FAQ

1. Can I make the whole process unattended？ To reduce user intervention, you can try to use UNIX expect tool.
2. How to use it with tmux？ Out of the box. Designed with tmux in mind. But because of the implementation of tmux, the speed is very limited. If you want to improve the speed, you need to modify the source code and recompile tmux

License

This application is free software; you can redistribute it and/or modify it under the terms of the MIT license. See LICENSE file for details.