PC was on a different subnet
I installed Arch Linux on my NSA325 using the instructions here
http://archlinuxarm.org/platforms/armv5/zyxel-nsa325
except I had to boot from the rear USB port near the side of the case.
It appears to boot from the hard drive and it gets an IP address via DHCP. The power LED is steady blue and the system LED is steady yellow. The disc1 and disc2 occasionally flash green. It responds to a ping on the IP address it was assigned.
When I try to connect via SSH using putty all I get is a blank screen.
If I remove the hard disk it fails to boot.
I have 2 working Pogoplug E02 systems with Arch installed so I could put the drive in a USB case and connect it to one of Pogoplugs. However, I don’t know what to look for.