tcptunnel 
Tcptunnel is a simple TCP port forwarder. Please see http://www.vakuumverpackt.de/tcptunnel/ for details and binary downloads.
Help
$ tcptunnel --help
Usage: tcptunnel [options]
Options:
--version
--help
--local-port=PORT local port
--remote-port=PORT remote port
--remote-host=HOST remote host
--bind-address=IP bind address
--client-address=IP only accept connections from this IP address
--buffer-size=BYTES buffer size
--fork fork-based concurrency
--log
--stay-alive
Building
For Unix
$ git clone https://github.com/vakuum/tcptunnel.git
$ cd tcptunnel
$ ./configure
$ make
$ ./tcptunnel --version
$ ./tcptunnel --help
For Mac OS X
You will need the Command Line Tools for Xcode to build tcptunnel under Mac OS X.
$ uname -mrs
Darwin 12.5.0 x86_64
$ git clone https://github.com/vakuum/tcptunnel.git
$ cd tcptunnel
$ ./configure --prefix=/usr/bin
$ make
$ ./tcptunnel --version
$ ./tcptunnel --help
$ file tcptunnel
tcptunnel: Mach-O 64-bit executable x86_64
For Mac OS X (Homebrew)
Thanks to Edward Samson's pull request, you can also use Homebrew to install tcptunnel under Mac OS X.
$ uname -mrs
Darwin 12.5.0 x86_64
$ brew --version
0.9.5
$ brew update
$ brew info tcptunnel
$ brew install tcptunnel
$ tcptunnel --version
$ tcptunnel --help
$ file $(which tcptunnel)
/usr/local/bin/tcptunnel: Mach-O 64-bit executable x86_64
For Windows (Cygwin)
You will need the Cygwin environment for Windows from http://www.cygwin.com/ with the following additional packages installed:
- gcc
- git
- make
$ uname -a
CYGWIN_NT-6.1-WOW64 computer 1.7.25(0.270/5/3) 2013-08-31 20:39 i686 Cygwin
$ git clone git://github.com/vakuum/tcptunnel.git
$ cd tcptunnel
$ ./configure
$ make
$ ./tcptunnel --version
$ ./tcptunnel --help
$ file tcptunnel.exe
tcptunnel.exe: PE32 executable (console) Intel 80386, for MS Windows
For Windows (MinGW32)
You will need MinGW32 to cross-compile tcptunnel. Please see http://www.mingw.org/ for more details. If you are using a Debian-based distribution then you will need to install the following packages:
- mingw32
- mingw32-binutils
- mingw32-runtime
$ apt-get install mingw32 mingw32-binutils mingw32-runtime
$ git clone https://github.com/vakuum/tcptunnel.git
$ cd tcptunnel
$ ./configure
$ make -f Makefile.MinGW32
$ file tcptunnel.exe
tcptunnel.exe: PE32 executable (console) Intel 80386, for MS Windows
Note: The MinGW32-based version does not support the fork-based concurrent client handling. If you need this feature under Windows, then you should use the Cygwin-based version.
ChangeLog
See ChangeLog.
License
Copyright (c) 2000-2021 Clemens Fuchslocher, released under the GPL.