port on filezilla

[Michael]

I want to transfer some directories from my old computer to the NUC. I
wanted to do it with nomachine but nomachine won't transfer
directories. So I open filezilla and I don't know what to do.
This is what filezilla says:

Status: Waiting to retry...
Status: Connecting to 10.0.0.5:21...
Status: Connection attempt failed with "ECONNREFUSED - Connection
refused by server".
Error: Could not connect to server

The only thing I can think of is the port. I left it blank because I
was unsure of what to put.
-- 
:-)~MIKE~(-: