I am proxying a VNC TCP server port with netcat. The proxy machine runs linux.
This is the comand I use:
mkfifo backpipe nc -l 5902 0<backpipe | nc 10.1.1.116 5902 1>backpipe
10.1.1.116 is the "remote" machine with the original VNC service running on port 5902. After this command VNC service is available on localhost for other machines.
But after each VNC session the netcat "proxy server" stops, which is how netcat works.
How can I make netcat keep the "proxy service" running after a VNC session was terminated?
As a workaround I am putting the netcat command line in an infinite Loop:
mkfifo backpipe while true; do nc -l 5902 0<backpipe | nc 10.1.1.116 5902 1>backpipe; done
But I would prefer an "oficial" netcat solution that does not interrupt the service at all.
I have read about the "-" parameter but I am not sure if this fits the case and I was not yet able to apply it correctly.
Of course I can do this with ssh tunneling in different ways, but I wanted a solution without the encryption overhead to make it as responsive as possible for the VNC client. A different proxy solution would be OK otherwise.
The client has to be VNC, no other protocols are possible.