I have underestimated leJOS at every turn, never more so than the issue of connectivity. I got Wifi to work by editing files directly on the SD card. That it worked is a testament both to leJOS and my own stubbornness. It turns out, however, that there is a much easier way of gaining SSH access to an EV3 running leJOS.
Simply use the mini-USB cable that ships with the EV3, connect the EV3 to your Linux machine and wait for the USB Ethernet connection to be established automatically (tested on Ubuntu where a desktop notification appears to indicate this). Run ifconfig to confirm that the usb0 network interface is up and running.
The EV3 displays its IP address on the home screen: 10.0.1.1. Simply SSH in to this address using username root and a blank password. Could it be more painless?
