The LAN server will be what computer you are forwarding the port to. In your case the computer running battlefield.
hmmm Ok, the router and my computer have slightly different ip's so I only need to forward it to my computer, and not my router? and is it normal for my computers ip to be almost similar to my routers ip just that the last digit istead of .1 for my router, my computer is .105? or am I looking at the wrong IP?