[isapros] Re: You cannot host TCP connections when Receive Side Scaling is enabled in Windows Server 2003 with Service Pack 2

  • From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
  • To: <isapros@xxxxxxxxxxxxx>
  • Date: Fri, 23 Mar 2007 06:35:44 -0700

I'll do that.  Don't get your hopes up, though - anyone or their brother
can write a KB and no one gets training.  Add to this the facts that
most dev/test folks have difficulty expressing technical points in
human-understandable ways and that the MS "official phrasebook" makes
sand seem damp by comparison and you have a real recipe for intellectual
disaster.

Believe it or not, I spend about 50% of my time correcting other folks'
KB's, whitepapers and other silliness.
I'm actually starting to win the Exchange team's "ISA ain't safe in the
domain" FUD, but the resistance is high.  I can't believe I actually get
the unicorn argument in response to my efforts... <sigh>

-----Original Message-----
From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx]
On Behalf Of Thomas W Shinder
Sent: Thursday, March 22, 2007 8:31 PM
To: isapros@xxxxxxxxxxxxx
Subject: [isapros] Re: You cannot host TCP connections when Receive Side
Scaling is enabled in Windows Server 2003 with Service Pack 2

OK, termination is a bit harsh. How about referral to HR so that he can
get some medical help for his autism?

-----Original Message-----
From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx]
On Behalf Of Thomas W Shinder
Sent: Thursday, March 22, 2007 10:19 PM
To: isapros@xxxxxxxxxxxxx
Subject: [isapros] Re: You cannot host TCP connections when Receive Side
Scaling is enabled in Windows Server 2003 with Service Pack 2

Oh, well that makes sense, since they said ICS specifically.

Can I recommended termination of the employee who wrote that worst in
history KB? You can quote me on that. It's a travesty and makes MS look
worse than Syphco or Czechpint.

-----Original Message-----
From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx]
On Behalf Of Jim Harrison
Sent: Thursday, March 22, 2007 8:17 PM
To: isapros@xxxxxxxxxxxxx
Subject: [isapros] Re: You cannot host TCP connections when Receive Side
Scaling is enabled in Windows Server 2003 with Service Pack 2

It's only "ISA-specific" because ISA performs NAT on the traffic passing
through it.
It's new code for WS03 Sp2 that breaks any scenario where traffic
crossing the WS03 host gets the NAT hammer applied to it.

-----Original Message-----
From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx]
On Behalf Of Amy Babinchak
Sent: Thursday, March 22, 2007 5:51 PM
To: isapros@xxxxxxxxxxxxx
Subject: [isapros] Re: You cannot host TCP connections when Receive Side
Scaling is enabled in Windows Server 2003 with Service Pack 2

I couldn't make heads or tails of any of the RSS documents. There are
quite a few of them on MSDN. I'm also hearing that it is hitting SBS
Premium users hard. I've been asked if it's an ISA related thing. Since
the RSS docs make no sense to me, I have no idea.

 

Amy 

 

 

 

 

From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx]
On Behalf Of Thomas W Shinder
Sent: Thursday, March 22, 2007 8:32 PM
To: isapros@xxxxxxxxxxxxx
Subject: [isapros] You cannot host TCP connections when Receive Side
Scaling is enabled in Windows Server 2003 with Service Pack 2

 

Does anyone speak PSS? I think that this might apply to ISA, but given
the SBSoid writing of this article, it's hard to tell.

You cannot host TCP connections when Receive Side Scaling is enabled in
Windows Server 2003 with Service Pack 2:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;927695

"SYMPTOMS

You cannot host Transmission Control Protocol (TCP) connections when
Receive Side Scaling is enabled in Microsoft Windows Server 2003 with
Service Pack 2 (SP2). The TCP connections are reset. This problem occurs
if you use Network Address Translation (NAT) and if the host computer is
configured to be an Internet Connection Sharing host server computer."

First, what does it mean to "host" TCP connections? Does it mean
"terminate" connection?

Does it mean something else?

Second, "if you use a NAT"

NAT where? In front of the box? Behind the box? On the box? At Tim's
house?

Third "if the host computer is configured to be an Internet Connection
Sharing host server computer"

Does this apply ONLY to ICS? What about RRAS NAT? What about ISA NAT?

Someone needs to tell these guys that we really don't live in their
heads, even though they might hear voices. ;)

Thanks!

Tom


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