[TriLUG] MS Web Host drops connecions from Linux clients

[Brian Phelps]

I don't know how to repost a twitter conversation but here goes.  It
reads backwards to forwards, which is annoying, like twitter often is,
so start at the >>>>>

electronjunkie

@kernelslacker Thanks! I'll tell Abdel to upgrade the NAT for his
server/domain. Whether he knows what that means is a different story.

kernelslacker

@electronjunkie right. The local side is just performing a perfectly
valid optimisation that the remote end doesn't handle.

electronjunkie

@kernelslacker Meaning the router on their end I take it.

kernelslacker

@electronjunkie just a hunch. I've seen it before. some crappy routers
have broken scaling implementations

electronjunkie

@kernelslacker Genius! Why would this server shit itself when
tcp_window_scaling is enabled? More importantly, what pointed this out
to you?

kernelslacker

electronjunkie

The last response I had from abdel claimed the problem was me. See
this interesting thread for why thats not the case:
http://bit.ly/2wJ95R

@electronjunkie site seems to load fine if you disable the
tcp_window_scaling sysctl. Looks like crap hardware on the remote end.

electronjunkie

The last response I had from abdel claimed the problem was me. See
this interesting thread for why thats not the case:
http://bit.ly/2wJ95R

electronjunkie

>>>>>
Start here and read up


Entire site that timeouts on TCP layer only to Linux Clients
http://www.keydigital.com/ Contact abdel at keydigital.com and ask to fix
it.
On Fri, Nov 6, 2009 at 7:30 AM, Brian Phelps <brphelps at ieee.org> wrote:
> Haven't heard back at all since I posted his last response.  I sent this to
> him this morning:
>
>>
>> Abdel,
>> I was wondering if you happened to figure out what the bug is in your web
>> server/firewall that is causing problems with non-Microsoft operating
>> systems.  I have not heard back from you on this and I would like to know
>> where this issue rests, and if you are still working on a fix for this bug.
>>
>> Thanks
>>
> On Wed, Nov 4, 2009 at 10:40 AM, John Broome <jbroome at gmail.com> wrote:
>>
>> Christopher L Merrill wrote:
>>>
>>> Lee Fickenscher wrote:
>>>>
>>>> Could it be due to all the asp on their site?
>>>
>>> It is certainly not a problem that is inherent to ASP. Most likely,
>>> something
>>> is looking at the User-Agent HTTP header and puking when it sees Linux.
>>> It could be at the firewall, the web server, or deep in their
>>> application.
>>
>> Ubuntu 9.10 here.  Tried site with no modifications and wouldn't load (or
>> was taking a very long time).
>>
>> Changed user agent to IE7 and i got the page up except for the residential
>> image on the LH side, and the 'government' and 'entertainment' images below.
>>
>> so strange.
>>
>> Someone wget their entire site, host it on apache and see what happens. :)
>> --
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>
>