I'm not sure what you're trying to do, but you could SSH to the machine
using PuTTy or something like it. Again, you'd have to make sure the ports
are configured properly.
Or you could go straight command line with:

ssh [username@remotehostnameoripaddress],
use -p [portnumber] if you have sshd setup to listen on a port other
than 22. You will be prompted for password.

if you need remote copy:
(from local machine)
scp [username@remotehostnameoripaddress:remote/file/name]
[local/target/directory]
use -P [portnumber] if necessary, -r to copy a directory recursively.

check the man pages, but I think that's the syntax.