In config.ini there's port=34197 under [other]. You can tell factorio wich config file to use with -c. (You also need to specify different write-data paths so the instances don't overwrite each other's temp/currently-playing/)

Well you can tell I looked real hard... Thanks for the help

Hey there, I whipped these up in about an hour in paint.net, hope you like them.

You can download them all here:
http://192.99.39.192:90/Liono2010_ico_FMM/Final_ICO_Images/


About
http://192.99.39.192:90/Liono2010_ico_FMM/Final_ICO_Images/About_FMM_ico_32.ico

Create Mod
http://192.99.39.192 ...

I'm running a dedicated OVH box with one Factorio server already working fine.
I would like to how to, if there is a way, to change the port in a headless server, as I would like to run more than one.

thanks, ryslinkee