Portscan failed

Hi, I installed Merlin firmware onto a N566u, and for the most part it seems great.

However a port scan tells me that FTP is closed but did respond to a probe, consequently the test failed. I am not saying its this firmware as I applied it without doing a factory reset.

However having gone through every tab, I can find nothing relating to FTP?
Just wondered if there was a way to turn it off or make it stealth, I don't need FTP.