Icrontic posted a guide about setting up DOSBox for LAN games

DOSBox emulates a native DOS environment in today's operating systems. Nearly anything you could run on Windows 95 or DOS you can run on DOSBox. When you use DOSBox, you will be operating in a virtual DOS machine. Although DOSBox does have a *few* unique commands, the commands are largely identical to the ones we used in the glory days of 16bit PC gaming.

How to set up DOSBox for LAN games