On Sun, 14 Jun 1998 mouse@Rodents.Montreal.QC.CA wrote:

> 3) A NAT setup that edits FTP control streams as they go past (yes, I
> have seen such a thing - in a commercial product);

Um, both the Linux `IP masquerading' (free) and ip-filter's NAT (free)
have this functionality.  I believe it was broken for a while in the
version of ip-filter that NetBSD had, but I haven't tried recently.
Anyway, it's not something that is solely available for $$$.

--scott