Firewall Wizards: Re: Slow FTP transfers

[sky <aptgetd () gmail com>]

Hi Chris,

There are no tracking module(s) that I know of. These servers are
located behind FWSM.

I haven't tried different server but active mode seems to cause
intermittent problem whereas passive mode seems to be the work around.


regards,
sky


Chris Smith wrote:
> Sky does the device that the ftp server sits behind have any kind of ftp connection tracking module?
>
> What happens with a different ftp server behind the same firewall using active mode and the same 50 MB file?
>
> This test will at least tell you if the firewall is the issue.
>
> Perhaps it could be an issue with the ftp server or the tcp stack on the host OS?
>
> Have you tried starting the service in a debug mode?
>
> Hope this helps.
>
> ----- Original Message -----
> From: firewall-wizards-bounces () listserv icsalabs com <firewall-wizards-bounces () listserv icsalabs com>
> To: Firewall Wizards Security Mailing List <firewall-wizards () listserv icsalabs com>
> Sent: Wed Oct 07 14:49:41 2009
> Subject: Re: [fw-wiz] Slow FTP transfers
>
> Hi,
>
> I've looked at every possible aspect of this connection based on the
> feedback I've received w/ no avail.
>
> FSWM module is running v1.1(4) and CATOS v7.6(16).
>
> Any further insight will be appreciated.
>
>
> regards,
> sky
>
> sky wrote:
> > Hi,
> >
> > I'm having an issue when ftp'ing (default port mode) large file (50megs)
> > to a remote server sitting behind FWSM. The transfer gets real slow and
> > at times just timeouts.
> >
> > Now when I change ftp mode to passive the same file transfer works w/o
> > any issues. Why?
> >
> > Have inspect ftp and mtu is set for 1500. I've checked for duplex
> > settings as well which is good.
> >
> > Any thoughts will be great.
> >
> > regards
> > sky
> >
> >
> >
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