Need help opening port 21025

I cannot join or create a server, my port 21025 seems closed, i dont understand at all how to open this port...
I searched for more than an hour now, and everything i do does not work...i have a Linksys router and there was a website with step by step but it did nothing, the game is checked in my firewall, i only have a dynamic IP.

I'm really desperate here!

Anyone can help?
Thx,

 

Sure thing, man. What model is your router? Do you have firewall/network security/virus protection etc on, if so what software names?

 

wp400, starbound is passing through the firewall "Kaspersky", and i found a website that says my port 21025 is closed!

 

wtf is a wp400? xD
can you link it please? opening ports usually isnt hard. just go to your own ip adress (as url) and enter your router menu

 

If you go to the command line, type "ipconfig" without quotation marks.Just type cmd into the search box at the start menu to open the command line if you're using a fairly recent edition of windows.

You'll see some info, one thing will be the default gateway. If you type this into the URL address bar of a browser it should take you to your router control panel. You can port forward from there.

 

192.168.2.1 or 192.168.1.1 should be your router address.
Press start, type cmd, press enter. In the small black window that appears type "ipconfig" and you're looking for your IPv4 address (usually something like 192.168.1.x, the last digit is the important one!)

Applications & Gaming tab > Port Forward Range - Here you want to forward port 21025 to your IPv4 address and make sure it's enabled.

Do this and get back to me and tell me results :~)

 

i have been to the router adress already, and i did what you said a hundred times but it never saves.

edit: my ip on myip.com was not the same as ipv4, that was the problem, now it saved

Thank you everyone for helping me so fast! CHEERS