The following steps describe how to ftp to sun-valley from a Mac. This is useful for exchanging files (images, pdfs, whatever) between the sun-valley system and your Mac. A similar procedure should work for PCs. We'll assume that you're using the ARL Mac for the steps below:
1. Start ssh
2. under Edit ... Connection Properties ... Forward, choose "New": ( name = sun-valley, port = 21, destination host = sun-valley, destination port = 21)
3. Login to sun-valley as usual
4. Start Fetch (an FTP program)
5. Under New Connection: (host = powder (this is the name of the ARL Mac), user = your sun-valley username, passwod = your sun-valley password, directory = (blank) )
This should bring up your home directory in the Fetch window. FTP as usual. What you are doing is telling Fetch to ftp to the local machine (powder) which ssh then "forwards" in a secure manner to sun-valley. This prevents your password from being transmitted as clear text and is the only way sun-valley allows incoming ftp connections.
NOTE: If Fetch doesn't behave correctly, make sure "use passive mode (PASV)" is checked under Customize ... Preferences ... Firewall within Fetch