Problem Help with running a server through a repeater

[TheTuper]

Hello, I'm trying to run an FTB server on my own computer for my friends and I on windows 7.

So the problem is that i can connect fine to my own server but none of my 3 friends can connect. I am 95% sure that the problem is my repeater that i use to get internet but i have no clue how to fix it. The repeater is a d-link dir-505 if that helps.

Any help would be appreciated

 

[Mr Chris]

Google "How to port forward d-link dir-505" to set up port forwarding (you need to forward port 25565)
Google "My IP" to get the IP address of your computer that you need to give to your friends