[nznog] Small linux boxes

Hi all, I imagine there are more than a few people on this list who have equipment in hard-to-reach places, and will have some sort of box at these sites that they can securely access remotely and then access their equipment through that box. I could do this with a cisco router and a modem, but, for a bit more flexibility, I'm looking at using some sort of physically small linux box that would boot off flash, have no moving parts, and provide at least 10/100 ethernet and a couple of serial ports. If anyone has any information on equipment as above that they're using, or have played with, please contact me off-list. Thanks.