thanks to the suggestions of Chris Buechler, I finally made it onto the list.
Executable for Windows: http://home.pages.at/ftpspace/win_tcptty/tcptty-0.2.exe
This is something I found, namely tcptty, a TCP <--> serial port gateway you can use to access the
serial console from anywhere inside your LAN using Putty or any other software of that kind,
provided you have a 'puter running along with your M0n0wall box to run this on. This is not my
sourcecode, nor did I alter it in any way, I just made the Win executable.
GPL 2.0 or later.