These should give you some ideas about opening a port on your PC. Then use Ian's suggestions about passing Matrix Orbital commands to it using port 1337.
I am not a Linux expert, but I do use it on my home network. I have a tWatch which is still sitting on my workbench since I haven't had much time to work with it yet. But I'll try to help you if I can.
First, have you gotten the backlighting "problem" resolved?
Sorry for the delay in responding; things got a bit hectic in my work for awhile.
After more testing, I found the problem was with my power supplies. One dead, the other with a negative center pin. My bad, I assumed all wall warts were positive center pin. So now I have a new one; 7.5 VDC, 800 mA, center positive.
With the new power supply I got my dhcp server to connect and got the MAC address from my syslog (running Linux); then was able to ping it; then ran the python script to turn on the back light. After adjusting the back light pot, it works fine.
Next (probably after the holidays) I'll upload the new firmware (to get the back light on at start up) and then go from there.
Well, I'm giving up on this one. I get no signs of life from it at all. Even nothing from the ethernet connector LED's. I sent a note requesting return shipping instructions to Seeed today, awaiting reply. Anyone tried this; any suggestions?