Fwd: Testing Access Grid node (fwd)

[Douglas Kosovic]

Linux kernel-2.6.7 (and later) exposed problems with many firewalls and 
routers not handling TCP window scaling correctly. It might be the problem 
in this case.

See the following for more details and a workaround:
 http://lwn.net/Articles/92727/

We had to reconfigure our fire wall to reconstruct TCP headers so that Linux 
kernel-2.6.7 clients could view our website. Web browsers would receive a 
partial download and hang or take a really long time.

Doug

----- Original Message ----- 
From: "Susanne Lefvert" <lefvert at mcs.anl.gov>
To: <ag-dev at mcs.anl.gov>
Sent: Wednesday, December 01, 2004 5:43 AM
Subject: Re: Fwd: Testing Access Grid node (fwd)


>
>
> Fyi, I got this from Roger.
>
>
> Susanne,
>
> I moved the machine outside of our firewall, it seems to be working.  My
> Network Admin will do a trace this afternoon.
>
> I appreciate the time and effort you've put into this.
>
> Thanks,
>
> Roger S.
>
> AOD-IT
> 630 252-9929
>
>
> On Wed, 24 Nov 2004, Susanne Lefvert wrote:
>
>>
>> Roger Sersted (a System Administrator at the APS) has problems connecting
>> to vv2. What could cause this exception? Any ideas?
>>
>>
>> 11/12/2004 02:18:01 PM -150546944 TextConnection     __init__.py:988 
>> ERROR
>> Couldn't connect to text service! hume.mcs.anl.gov:9004
>> Traceback (most recent call last):
>>   File "/usr/lib/python2.3/site-packages/AccessGrid/TextClient.py", line
>> 133, in __init__
>>     self.socket.connect(self.host, self.port, self.attr)
>>   File "/usr/lib/python2.3/site-packages/pyGlobus/io.py", line 990, in
>> connect
>>     raise ex
>> GSITCPSocketException: an end-of-file was reached
>>
>>
>> Thanks,
>>
>> Susanne