Re: Telnet Problem

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Another freeware utility is Cport http://www.nirsoft.net/utils/cports.html
Im using it manytimes especial against maleware (has the ability to kill bad 
tasks not shown in taskmanager!)

greetings, andy

-----Ursprüngliche Nachricht----- 
Von: "Edson" <4lists@xxxxxxxxx>
An: "'GNU Gatekeeper Users'" <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
Gesendet: Mittwoch, 12. Dezember 2007 19:17
Betreff: Re:  Telnet Problem


> You could try Aports (http://www.download.com/3000-2085-10062969.html).
>
> In Your case it seems to worth a try, but be aware that this is indicated
> only for checks, not for constant run, since Symantec advise the 
> possibility
> of use by some malwares... :(
> (http://www.symantec.com/security_response/writeup.jsp?docid=2003-092411-292
> 1-99)
>
> Edson
>
>>-----Original Message-----
>>From: openh323gk-users-bounces@xxxxxxxxxxxxxxxxxxxxx [mailto:openh323gk-
>>users-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Nyamul Hassan
>>Sent: quarta-feira, 12 de dezembro de 2007 15:50
>>To: GNU Gatekeeper Users
>>Subject: Re:  Telnet Problem
>>
>>Hi Jan,
>>
>>Thank you for your suggestions, and I would definitely try them out.  I'm
>>using Windows Server 2003.  Do you recommend any software to monitor the
>>number of sockets open at a particular time?  I've got a Nagios unit on my
>>network.  Is it possible to monitor the number of sockets open through
>>Nagios?
>>
>>Regards
>>HASSAN
>>
>>
>>----- Original Message -----
>>From: "Jan Willamowius" <jan@xxxxxxxxxxxxxx>
>>To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
>>Sent: Wednesday, December 12, 2007 14:31
>>Subject: Re:  Telnet Problem
>>
>>
>>> Hi Hassan,
>>>
>>> please let us know what you find.
>>>
>>> I've seen a similar case where a GnuGk 2.2.7 on Linux would stop
>>> statusport output under high load (~500 calls) while another machine
>>> (same hardware, same GnuGk version) would still send all output under
>>> the same load.
>>>
>>> In this case it would stop after a few hunderd KB and so far I didn't
>>> find why. If you run tests, it would be good if you could monitor
>>> system resources such as sockets etc. Maybe we can find a pattern when
>>> this is happening.
>>>
>>> Regards,
>>> Jan
>>>
>>>
>>> Nyamul Hassan wrote:
>>> > Hi,
>>> >
>>> > Aroung a year ago, I had reported a problem with the new 2.2.5 branch
>>(running on Windows Server 2003) that there was a problem with the telnet
>>not working if the output 10kb (output of the cv command).  This problem
>>was
>>subsequently looked into my Michal, and improved in the 2.2.6 version 
>>where
>>a telnet from the localhost (Windows Server 2003) was running ok. 
>>However,
>>from remote windows sytems, running both PuTTY and Microsoft clients, I
>>still get logged off after 10kb of content.
>>> >
>>> > I then went on writing a PHP scrit that does a socket connection on 
>>> > the
>>GkStatus port and gets the output of "cv" command every 30 seconds.
>>> >
>>> > Today, the PHP script failed when the load was around 280+ calls
>>(connected + trying).  Running the regular Microsoft telnet client, I
>>couldn't get more than exactly 36kb of data, although my PHP clients 280+
>>calls indicated at least 2.5 times that size was received nicely.
>>> >
>>> > The load has reduced now, so can't run tests now.  When the load comes
>>later today, I plan to do the following:
>>> > 1.  Try a local PuTTY client
>>> > 2.  Try a level 6 trace when the "cv" command is run from both remote
>>and local clients.
>>> >
>>> > In the meantime, if any of you guys out there have any more
>>suggestions,
>>please let me know.
>>> >
>>> > BTW, this used to work fine in 2.2.4, and we've seen call loads higher
>>than 350.  The only problem in that version was the EXE file used to grow
>>in
>>size gradually.  So, had to restart the GK every 2 - 3 days, depending on
>>call load.  Since 2.2.5, the memory problem has been solved beautifully.
>>My
>>GK is running for 34 days 04:26:44 at this time of writing.
>>> >
>>> > Thank you all, for your help.
>>> >
>>> > Regards
>>> > HASSAN
>>>
>>>
>>> --
>>> Jan Willamowius, jan@xxxxxxxxxxxxxx, http://www.gnugk.org/
>>>
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