I agree with Fionnbharr on this one.
SSH is easy and as secure as you can get.
On the server side, just start sshd.
On the client side, just type in dolphin:
Code:
fish://username@your_server_ip_address/some_dir
You'll be prompted for the password of "username", of course.
Assuming that "username" has appropriate permissions on "/some_dir" in your server, then all is well