I'm wanting to host my server for my friends to be able to connect to my server, so far we've been using hamachi but it has a limit on how many people can connect to the server at the same time.
So after seeing a couple of guides, I wanted to go with the no-ip method because it appeared to me that it is the easiest one out there.
Here are the steps I did:
1)I made a no-ip account, created a host, and downloaded the program from no-ip and I see there's a check mark next to my host meaning that its online.
2)I didn't do any changes to loginserver.properties or gameserver.properties. I left them with "*" mark.
3)I changed the ip in the ipconfig.xml to my no-ip address.
4)I editted l2.ini using l2file editor and added my no-ip address in there.
5) here's what I get when I run the login server:

when I try to connect with the l2.ini that has the no-ip address, I get an error in the client when I try type my login information saying "Unable to resolve host". I still have not tried to give the l2.ini with the no-ip address to friends to check if it works.
My question is, do I need to do an extra step to make it work and my friends are able to connect? Do I need to edit the hosts file in the system32? and if I need to then what would I add to the file? and would my friends need to edit their host file as well in order to be able to connect?
If there is nothing that I need to do and what I did seems right to you then just say that everything is okay please!
Thank you very much for the assistance, I'll be looking forward for your response ^^