Hi i"m a reqular player on LFS and im trying to run a server, and i have NO IDEA what im doing, ive got a wireless modem, one connected through Ethernet, which im trying to get to run the server

If ne1 can help be much appreciated

p.s i dont mean to sound n00by lol

you will need to forward ports
try
portforward.com

find your router / modem find and follow steps

theres 2 ports for lfs that need to be open.

Nope My Router / Modem Ain't In There

You can always try your manufacturer's website and/or the manual.