[lug] Re: IP masquerading and FTP hangs up on ls

[Rob Riggs]

The other option is to use the ip_masq_ftp.o kernel module to
deal with the FTP issues when masquerading. This allows both
PORT an PASV modes to be used from behind a masquerading
firewall.

"Ferdinand P. Schmid" wrote:
> 
> Anthony:
> 
> I posted my response also to the blug list because I recently received
> several requests regarding the same issue.  Hopefully in the future a
> query on the topic will also list this response.
> 
> The problem is caused by a peculiarity of FTP:
> Whenever you make a standard FTP connection to a host (this is called
> the control connection) the host will try to establish a second
> connection back to you for transferring information (data connection).
> Since IP Masquerading only allows outgoing connections this incoming
> connection
> won't succeed and you won't be able to do directory listings...
> 
> "Anthony N. Urwin" wrote:
> 
> >
> > Hello,
> >
> >
> >
> > I saw your message about the ls command you had in a news group and
> > you were getting invalid port command with IP masquerading? I was
> > wondering if you ran into a solution. I am having the same problem.
> > Thanks in advance.

-- 
Rob Riggs
http://www.pangalactic.org/