Hi. I create server but noone can connect.. I check port with portchecker and says that is OPEN , i also open port i firewall and still not work Can someone help me ?

can you share the setup file so we can see if you have done something wrong

Hmm when i open portchecker he said that port is open, but when i create lfs server and close server PORT IS NOT OPEN ANYMOREEE ...What is problem ??

When you close the server, nothing is waiting for a connection on that port anymore, and that resembles as a closed port.