This is the IP filter page.
If you're putting *.*.*.* on the top like the tutorial says then you need to put your LAN address on the bottom address.
You can find the local address from the link below. IP Address - Locate and Find for Your Computer
In addition you can also allow your whole subnet on the FTP server with one address. If your address is 192.168.0.x then you can use 192.168.0.0/24 to allow all addresses in the range.
The only bad thing about this is that when you're connecting remotely you will have to add the public address of the computer you're connecting from to the exclude list.