[Mark_Samp]

You need to Port Forward to let other see your server and connect to it , but it if your internet closed or you closed the samp-server the server will close so to let it always open even if your internet closed or samp-server closed to be online you will not to Host it
Note : If you port forward you will need to keep your samp-server open to let other join your server , if you close it , server will not work . So open it and give your ip to your frineds to join it , to know your ip visit : www.whatismyipaddress.com and put your port at last for example if your ip is : 41.46.75.231 and your port is 7777 so you will put it like this : 41.46.75.231:7777 and give it to your frineds to join and be sure your samp-server is opened . I hope this worked