#6 Bypass firewalls through an ssh tunel

[Jan Ploski]

The client currently cannot be used behind a firewall which forbids outgoing TCP connections to the GridFTP control and/or data ports.

Make it possible to use the client when the only external connectivity is ssh to a host in a DMZ (which itself can access the needed GridFTP hosts and ports). A lightweight proxy (say, implemented in ubiquitous Perl) can be deployed on the DMZ host either by the user or perhaps even automatically by the GridFTP client.