On my pair of Ubuntu systems, a 3 MB file transfer via Nautilus 2.32 over SSH takes about 15 seconds between two computers with identical wireless cards 2 meters apart.
Larger files take significantly longer, so the 15 seconds is not dominated by handshaking. This data rate seems unsatisfactory and obviously it would get worse if I were concurrently using the wireless cards for internet access.
I have a 20 meter (About 65 feet) Ethernet cable, coiled down to 2 meters, between the two computers but that physical medium is probably not being used for SSH because when I disable wireless, each Nautilus cannot see the other machine.
How do I setup SSH for the Ethernet cable exclusively?