🚀 go-pugleaf

Okay, this might be easy or it might not - I've tried to research via Google 
but not got very far at all.

An old gaming acquaintance and I want to play some games across our 
broadband connections that we used to play on dial-up..  things like Duke 
Nukem 3D and Red Alert as well as others.  Obviously these games don't have 
broadband multiplayer options built in, even if we can get them running on 
Windows XP anyway, so is there a /general/ way we can still play them?

I've found the individual programs for DN3D at least but the multiplayer on 
all those seems broken or at least WIP.  I did find Kali but that only seems 
to run the vanilla version of Duke 3D and I need to run a Winlauncher for it 
so I can play in XP at all.

I would try ACRSetup but I can't seem to download the program from the 
website.

Is there therefore a program that will emulate a null modem cable, serial 
link or IPX/SPX connection directly between our two PCs using only our IP 
addresses so that we can play these old games?

All help very much appreciated..

Schnide