portforward.com?
Since that would naturally be the first place you go I'll give you general advice. There should be a link somewhere that says port forwarding...if you don't see it, there should be some sort of menu in your router's set up that shows a bunch of links like 'basic' or 'advanced' or 'tools' or
whatever. On mine it is under advanced. It shouldn't be too hard to find.
You configure an exception for your server. You need to know its internal IP address, which would be 192.168.x.x or 10.x.x.x. Do an ipconfig from your computer's command prompt and it should tell you. Along with your server's IP address, you enter the port that you want to open. If its a
range, enter the same port for the low/high.
And if any of that confuses you, I can NOT stress enough how useful google is. This is one of the easiest procedures in networking to actually configure.
---
class EOSERV {
Programmer | Oldbie
Open source EO Client: https://github.com/ethanmoffat/EndlessClient
};