On Fri, 18 Oct 2002, John Girvin wrote:

> Hi,
> 
> We have a DMZ and a couple of masq'd subnets hanging off a
> Bering rc3 box. There is a need for FTP from the masq'd nets
> to a DMZ machine, which I've got working alright on the normal
> port 21 but I can't get it to work on non standard ports.
> 
> The client connects to the server alright, but data connections
> get refused. I'm guessing the FTP connetion tracking module
> isn't tracking the FTP connections to non standard ports, so the
> data connections don't get marked as being related.
> 
> Am I on the right track?

I think so.

> Is there anything I can do about it?
> Any help appreciated...

Change your /etc/modules:

ip_masq_ftp ports=21,5021

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