Hello, ShedDriver & welcome to LQ.
For most people, the solution is to use the router supplied by Your ISP and that looks after that messing. You don't really say anything we could use to help you
- How is the internet connected?
- What distribution are you running?
- Is your (or any) box on 24/7/365?
- Have you searched the web and the LQ site for walk-throughs on doing this?
They are just some of the things you don't say. Have a search for a walk-through on your distribution and post the link, and answers to the above. We'll give a 'thumbs up' or 'thumbs down' to it. Then you can post when you hit trouble.
If no pc is always on, you may wast to buy some little cheap SBC to do the web server, and leave that on 24/7. Power usage can be quite small.