Mark de Vries <markdv.lvsuser@xxxxxxxxxx> wrote:
> On Sun, 27 Nov 2005, Roberto Nibali wrote:
>> >> Is there an indication in RFC959 which states that this "behaviour" is
>> >> legal as well for active FTP?
>> > no-one requires code to obey standards to sell it ;-(
>> Well, vsftp is GPL and written by someone I happen to know even :). But
>> it must be RFC conformant or else clients would not be able to properly
>> interact with the server.
> As far as I understands the RFC leaves no room for a different src port
> for the data connection. It's not fixed at 20 but should be 1 below the
> controll port. Which is what ip_vs uses literally IIRC.
Still, it would be harmless enough to add an option, passed
as a module loading parameter to ip_vs_ftp, that allows an
alternate port. It would be globabl, and obviously there are
cases it wouldn't cover, but it would solve the problem at hand.
I guess the remaining question is, should the problem at hand be solved