Re: Slow FTP transfers

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: [email protected] <[email protected]>
> To: Firewall Wizards Security Mailing List <[email protected]>
> 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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