Can remote login via ssh terminal but can't open volume in Krusader (via FISH)
 

I have a wireless net between an outbuilding and my house. The ISP service comes into the WAN port of a router in the out building. A WiFi bridge in the house connects to the external router, the bridge is connected to the WAN port of a second router which creates the internal home network.

Inside the house on the internal network I have a Linux appliance with an attached USB drive for storage. It supports SSH but not FTP (and no repros to pull additional protocols from, so adding software requires compiling or hacking).

I have forwarded port 22 (soon to change) through my internal router to the appliance. From a workstation on the outside network in the out building, I can open a remote terminal on the appliance using
"shh <exteral_IP_of_inside_router> -l <username>", but using the same parameters and the FISH (FIle transfer over secure SHell) in Krusader returns "Error: Could not enter folder". Krusader (and WinSCP) connect to the appliances storage fine on workstations on the internal network.