Found a partial answer:

Charter Communications blocks all the common ports, ie 21 is among them.  So
I changed it to port 4021.  I can connect, but I cannot see the directory
because (I am assuming) port 4020 still is not getting out.  I am getting
the message "425 Can't open data connection".

- Joey

---------- Forwarded message ----------
From: Joey Rockhold <joey.rockhold at gmail.com>
Date: Mar 2, 2007 9:47 AM
Subject: IPCop, FTP server
To: TCLUG List <tclug-list at mn-linux.org>

I have set up a FTP server on my home network.  Internally, I can connect to
it and everything works fine.  From outside, I cannot get to it at all.  I
have been trying to google how I should set up my IPCop firewall, and trying
various things, but I am missing something somewhere.  Any suggestions?

- Joey
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