How to use ssh tunnels to transfer files directly to and from balsa

Windows: 
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Requires 'SecureCRT' and 'WinSCP' from http://software.oit.gatech.edu
Other similar utilities may be substituted, but instructions reference
these application interfaces.

--------- Setup --------------
Open SecureCRT, goto File->Connect, choose the 'New Session' icon.
Protocol = ssh2
Hostname = ssh.math.gatech.edu
Port=22
Username = YOUR_MATH_USERNAME_HERE
Session name=Tunnel2Balsa
Click Finish

Right click on the newly minted 'Tunnel2Balsa' and select 'Properties'
Goto the port forwarding section and choose add
name=tunnelssh2balsa
local manual ip = 127.0.0.1
local port=2200
remote destination = balsa.math.gatech.edu
remote port=22
Click OK
Set 'do not request a shell'
Click OK to close properties window
-------------End Setup Section-------------

----------- Transfer files ---------------
Open SecureCRT and connect to the 'tunnel2balsa' session

Open WinSCP
hostname=127.0.0.1
port=2200
username=YOUR_MATH_USERNAME_HERE
Click connect

Drag and drop files as needed

Close WinSCP and SecureCRT when done.
------------------------------------------

Linux:
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Open up two terminals.  In the first one, create the tunnel by typing:

   ssh -TNL  2200:balsa.math.gatech.edu:22 YOUR_USER_NAME@ssh.math.gatech.edu

Then in the second shell, you can transfer files by typing

   scp -P 2200 localfilename.txt llefton@localhost:remotefilename.txt

To transfer an entire folder, you can use the -r flag for recursive.  This 
example transfers a directory on balsa back to my local /tmp directory.

   scp -r -P 2200 llefton@localhost:MPIexample /tmp