How to Disable FTP on my FIOS Quantum Gateway

[#1]

All,

It appears that tcp port 21 (ftp) is open on my FIOS Quantum Gateway Router.

Can someone please explain to me how to block this incoming port?

Thanks in advance,

Steve

[#2]

Login to your router and up top click Firewall > Yes > Port Forwarding. 
That will show you all the ports you have open

[#3]

Also, disable Universal Plug and Play (UPnP) from the router's Advanced Settings page, just in case a device is somehow being allowed to open Port 21 to the Internet.

A small note - Many routers, but not all, include port security so that UPnP cannot be used to open a "reserved" port below the number 1024.