Re: [squid-users] ZSR and Connection Reset on www.dteenergy.com

From: Amos Jeffries <squid3_at_treenet.co.nz>
Date: Tue, 09 Aug 2011 11:57:20 +1200

 On Mon, 8 Aug 2011 16:17:25 -0400, Ryan Bunce wrote:
> All,
>
> Many thanks to all of you who support Squid, it has served us well
> for
> many years.
>
> I am having trouble getting to the website www.dteenergy.com (a
> mid-west
> based utility company) through Squid. It works fine without.
>
> I have worked about every angle I can. TCPDump shows a few packets
> and
> then a reset packet coming from the web server and then it loops
> until the
> retry count is hit at which point Squid returns a Zero Sized Reply or
> just
> gives a connection error.
>
> I have tried it with multiple Squid versions (2.4-2.7) under various
> connection scenarios, behind a filtering firewall and directly
> connected
> with no firewalling save a basic NAT. Also tried from multiple
> sources,
> cable modem, 3G hotspot, and the corporate T3 with the same result.
>
> I was hoping to verify that indeed it is a Squid-wide issue and
> hoping
> that someone could spot something that I'm just not seeing.

 Works fine from here (squid-3.2). We've seen this type of behaviour
 with broken NAT boxes or HTTP filtering firewalls in the past. Look for
 the TCP RST packet hop count for clues on how far away it is.

 Amos
Received on Mon Aug 08 2011 - 23:57:23 MDT

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