You should post what you need help with actually.

Go to your router settings and go to the gaming thing and put your 43594 as in & out port. If your port doesn't open you'll probably have to use a static ip. For your client. Go to no-ip .com and download DUC. Sign up and click add host and make it no-ip .org or w/e. Open DUC and run your (clientname.no-ip .org) Download your client files (I used Team Torva source/client) go to run, right click and hit edit, change the Jdk version to what you have then save & close. Go to the client side and do the same. Then go to client.java & Change your local to the name of your server (name.no-ip .org) there will be two places in client.java you'll have to change. Then go to GUI.java and change the 127.0.0.0 or w/e you have to the name of your server just like you do in client.java. Run the server then open the client and it should work unless your path is closed. If its closed then go to your environmental variables and fix the path.