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Re: tls ssl ftp connection over iptables

oops I don't understand because even in passive mode it hangs (in TLS
only, it works fine in clear mode)


Thu, 25 Mar 2004 16:10:13 +0100
"Volker Tanger" <volker.tanger@detewe.de> Message original :

> Greetings!
> On Sun, 25 Apr 2004 14:17:45 +0200 Bastien Rocheron
> <bastien.rocheron@free.fr> wrote:
> > I have an iptable packet filter which does his job well but when I
> > decide to allow only tls connections over the ftp server people can
> > connect on the server in active mode because I said to the packet
> > filter to let everything come thru the ftp port but just after the
> > connection is made it hangs and nothing more happens. I suppose it's
> > because of the data port which is given randomly and this one is
> > cyphered so the packet filter gets mad about it and drop the
> > packets.
> The FTP-conntrack can't look into the control channel and thus cannot
> detect which data port will be used - thus no data port is ever
> opened.
> One workaround would be to allow all outgoing connections and use
> Bye
> Volker Tanger
> ITK Security
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