Sorry for the late answer, but i had not much time the last few days.
I have compiled dosbox-0.74.tar.gz from source but when i run it i get a segfault, so i can not test this.
I also tried Idosbox but this app quits immediately after it starts, so i can’t test this too.
And what do you mean with port number 2000? I thought port numbers are for IP communication.