[Zope] FTP and Firewall

[Paul Winkler]

On Mon, Jul 31, 2006 at 06:34:16AM +0200, Andreas Jung wrote:
> 
> 
> --On 31. Juli 2006 00:28:59 -0400 Dan Gaibel <dg76 at cornell.edu> wrote:
> 
> >Hi,
> >
> >I'm using Zope 2.8.6 with Python 2.3.5 and have found that when I FTP
> >into zope, I am unable to list the contents of the directory I am in.  It
> >seems that logging in is no problem. Could this be a problem with  my
> >firewall? Has anyone seen this before? We are using port 8021  rather
> >than the usual port 21. Could this be the issue?
> >
> >
> 
> Try to FTP in passive mode. FTP usually requires *two* ports to be open 
> 8021 (standard) and one that can't be determined usually (by the end-user).

Yep.  But IIRC, passive mode won't help if the firewall is doing NAT.
I had the same problem - login seems to work, ls fails.

Blame FTP. It just wasn't designed for a world that includes NAT.

If you can arrange to use WebDAV instead, that should work fine.

-- 

Paul Winkler
http://www.slinkp.com