This article will show you how you can connect to your server.
Setting yourself as Admin/GM
Life is feudal doesn't have individual admin accounts, instead you set yourself as GM by logging in with the server gm password.
This can be done via this command as shown:
/gm password (using the password set in world_X.xml [GM friends can use])
You can see the gm commands and how to login here: Life is feudal your own admin commands