[Proftpd-user] Slow ftp, please!

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Re: [Proftpd-user] Slow ftp, please!

At 12:10 PM 5/1/2008, Michael Russell wrote:

Hi,

Here's a perhaps unusual request, either for information or an enhancement:

We have a low-grade network at our office, where we conduct support activities for many Unix systems.
We occasionally have to ftp large files to/from here.
Standard (SCO unix) ftp client slaughters the network's performance.

Is there a way to have ftp behave 'nicely'?
On these occasions, a 40Mbyte file would take 20 minutes to transfer & reduce us to watching for successful keystrokes on our PCs, where we use Citrix to log in to a major client.

As the file could well be required 'some time today', it would be useful to be able to throttle back the network usage.

Can this presently be accomplished, or would it require a code change?

I've not used either of these two ideas, but until wiser heads opine....

Have you experimented with the standard configuration directive?
    TransferRate [ cmds] [ kilobytes-per-sec[:free-bytes]] [ ["user"|"group"|"class" expression]]
See the configuration directives documentation for discussion.

And there's a contributed module, found from the "Contrib module news" link http://www.proftpd.org/module_news.html on the home page, to "FTP traffic shaping" http://www.castaglia.org/proftpd/modules/mod_shaper.html, which looks quite interesting, for instance the added directive:
    # Change the overall daemon rate to 100 KB/s
    ShaperAll rate 100

Some things to play with...

Thanks in advance,

Michael

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Re: [Proftpd-user] Slow ftp, please!

On 5/1/08 1:40 PM, "Thomas L. Shinnick" <tshinnic <at> io.com> wrote:

> I've not used either of these two ideas, but until wiser heads opine....
> 
> Have you experimented with the standard configuration directive?
>     TransferRate [ cmds] [ kilobytes-per-sec[:free-bytes]] [
> ["user"|"group"|"class" expression]]
> See the configuration directives documentation for discussion.

I use the TransferRate directive, and it works great with both users and
groups here.

--

-- 
JR

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[Proftpd-user] SSL error

Hi,

I've been looking for an answer about this log error from the server-side when 
trying to complete a passive transfer over ssl:

May 05 11:05:10 www proftpd[5307] 10.20.1.167 (...): Passive data transfer 
failed, possibly due to network issues
May 05 11:05:10 www proftpd[5307] 10.20.1.167 (...): Check your PassivePorts 
and MasqueradeAddress settings,
May 05 11:05:10 www proftpd[5307] 10.20.1.167 (...): and any router, NAT, and 
firewall rules in the network path.

Sometimes, also appeared this:
May 05 09:24:47 www proftpd[14000] 10.20.1.167 (....): mod_tls/2.1.1: 
unexpected OpenSSL error, disconnecting

>From the client-side, ssl connection is closed with this message:

50 Opening BINARY mode data connection for 0011200805050800.zip
===>START SSL connect on DATA
ftp: SSL_connect DATA error 0 - error:00000000:lib(0):func(0):reason(0)

Server is a 14-month-old compilation of version 1.3.0.
There is a symantec firewall in the middle, but it seems to be everything all 
right..

Thanks,

PD: should i recompile an updated version?
--

-- 
Lucio Aisemberg

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[Proftpd-user] "invalid" character hangs listing of a directory

Hello,

we encountered a problem where users created file that contained "invalid"
(not ascii) character in its name which cuased proftpd hand and eat 100% of
CPU when trying to list the contents of a directory. 

I moved the file to directory and ensured it hangs. /bin/ls | od -c says
this:

0000000   _   o   b   j   e   d   n   a   v   k   a   _   i   n   t   e
0000020   r   _   x   m   l   s   e   n   d   .   b   a   k 362   a  \n
0000040

the "362" is octal number of the character which apparently causes the
problem.

Is this known problem, can we avoid this somehow?

--

-- 
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Warning: I wish NOT to receive e-mail advertising to this address.
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Re: [Proftpd-user] "invalid" character hangs listing of a directory

> we encountered a problem where users created file that contained "invalid"
> (not ascii) character in its name which cuased proftpd hand and eat 100% of
> CPU when trying to list the contents of a directory.

Could you get a process trace, and any relevant debug logging/trace
logging of the proftpd process when this occurs?

TJ

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   Mediocrity knows nothing higher than itself, but talent instantly recognizes
   genius.

     -Sir Arthur Conan Doyle

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Re: [Proftpd-user] SSL error

> I've been looking for an answer about this log error from the server-side when
> trying to complete a passive transfer over ssl:
>
> May 05 11:05:10 www proftpd[5307] 10.20.1.167 (...): Passive data transfer
> failed, possibly due to network issues
> May 05 11:05:10 www proftpd[5307] 10.20.1.167 (...): Check your PassivePorts
> and MasqueradeAddress settings,
> May 05 11:05:10 www proftpd[5307] 10.20.1.167 (...): and any router, NAT, and
> firewall rules in the network path.

The above message occurs when proftpd times out waiting for a data
transfer; the most usual culprits are firewall/NAT/router issues.  If you
see this message only sometimes, my guess is that it's a transient network
condition in your system.

> >From the client-side, ssl connection is closed with this message:
>
> 50 Opening BINARY mode data connection for 0011200805050800.zip
> ===>START SSL connect on DATA
> ftp: SSL_connect DATA error 0 - error:00000000:lib(0):func(0):reason(0)

Well, the above message from the client indicates that it uses OpenSSL,
but that it hasn't loaded the OpenSSL error strings, so that it cannot
provide any more useful information than "00000000".

> PD: should i recompile an updated version?

This doesn't look like a server issue to me; perhaps a problem with the
clients used, or a transient network issue.

TJ

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

   Everywhere one seeks to produce meaning, to make the world signify,
   to render it visible.  We are not, however, in danger of lacking meaning;
   quite the contrary, we are gorged with meaning and it is killing us.

   	-Jean Baudrillard

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[Proftpd-user] Pb using TLSCARevocationFile or /and TLSCARevocationPath

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[Proftpd-user] GCC 4.3.x and -Wno-long-double warnings

For anyone who encounters a gcc warning about "-Wno-long-double" while
using a recent gcc release, see:

  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28322

The short version is that recent gcc versions will not complain about
unsupported command-line -Wno-* options until _later_, until after some
other warning/error.

Thus, if reporting an issue with compiling proftpd, be sure to include the
_entire_ output from gcc, not just the "-Wno-long-double" portion.

TJ

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   He who has never hoped can never despair.

   	-George Bernard Shaw

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[Proftpd-user] ScoreBoard

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