Re: Many Web Pages are not opening - Please helpand advice
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 29 Apr 2004 06:18:53 -0500
Hi Ahmed,
Cause that is how ISA works. You can edit the Registry to change the
default behavior.
HTH,
Tom
Thomas W Shinder
www.isaserver.org/shinder
ISA 2004 Beta - Get it now!
http://www.microsoft.com/isaserver/beta/default.asp
ISA Server and Beyond: http://tinyurl.com/1jq1
Configuring ISA Server: http://tinyurl.com/1llp
-----Original Message-----
From: Nabil, Ahmed [mailto:anmahmou@xxxxxxxxxx]
Sent: Thursday, April 29, 2004 5:52 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Many Web Pages are not opening - Please helpand
advice
http://www.ISAserver.org
But why is it ignoring the TTL or not obeying it ??
Thanks and have a nice day,
Ahmed Nabil
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Tuesday, April 27, 2004 3:03 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Many Web Pages are not opening - Please helpand
advice
http://www.ISAserver.org
The default isn't zero.
This is ISA's "local" name resolution cache.
The problem is that it doesn't obey record TTL.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Tue, 27 Apr 2004 11:42:44 +0200
"Nabil, Ahmed" <anmahmou@xxxxxxxxxx> wrote:
http://www.ISAserver.org
Jim,
It seems to be working fine now. I don't yet understand why was this
setting making this problem. Is the default setting while installing ISA
in this registry key is Zero, if so then how it became this large number
??
Your comments is highly appreciated.
Thanks and have a nice day,
Ahmed
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Thursday, April 22, 2004 3:38 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Many Web Pages are not opening - Please helpand
advice
http://www.ISAserver.org
You might want to try reducing or eliminating your ISA DNS cache.
This article discusses how to do that:
http://www.isaserver.org/tutorials/ISA_Clients__Part_1__General_ISA_Serv
er_Configuration.html
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Thu, 22 Apr 2004 08:54:46 +0200
"Nabil, Ahmed" <anmahmou@xxxxxxxxxx> wrote:
http://www.ISAserver.org
Good morning All,
I re-checked my DNS forwaders on my DNS Server and they are correct
(pointing to our ISP), I believe the problem is the internet DNS
resolution through ISA. Please advice. this is very irritating problem.
Sometimes I can't open any sub pages from yahoo, Microsoft & NAI and
then after a couple of hours they are opened fine and another set of
pages is down.
This morning I tried to open a normal page and here is what I get.
The Web site cannot be found
The Web site you are looking for is unavailable due to its
identification configuration settings.
------------------------------------------------------------------------
--------
Please try the following:
Click the Refresh button, or try again later.
If you typed the page address in the Address bar, make sure that it is
spelled correctly.
Click the Back button to try another link.
11001 - Host not found
Internet Security and Acceleration Server
------------------------------------------------------------------------
--------
Technical Information (for support personnel)
Background:
This error indicates that the gateway could not find the IP address of
the Web site you are trying to access.
I checked the Web Proxy log for my request and attached below the line
extracted from the log.
10.202.80.108, anonymous, Mozilla/4.0 (compatible; MSIE 6.0; Windows NT
5.0; .NET CLR 1.1.4322), -, 4/21/2004, 8:21:25, -, ISA Server name, -,
www.socks.permeo.com, -, 80, 0, 301, 0, http, -, GET,
http://www.socks.permeo.com/AboutSOCKS/SOCKSOverview.asp, -, Inet,
11004, -, -, -
When i clear the cache and restart the server, every thing works fine
for sometime.
Please advice and help.
Thanks and have a nice day,
Ahmed
-----Original Message-----
From: Amy Babinchak [mailto:amy@xxxxxxxxxxxxxxxxxxxxxxxxxx]
Sent: Tuesday, April 06, 2004 3:24 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
Ahmed,
You mention checking the nic DNS addresses on the ISA server but what
about the DNS forwarders on your DNS server? This is where I found the
problem to be.
Amy
-----Original Message-----
From: Nabil, Ahmed [mailto:anmahmou@xxxxxxxxxx]
Sent: Tuesday, April 06, 2004 2:40 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
Amy,
I believe I have the same problem like yours but when I checked the DNS
settings (Internal NIC and External NIC) on the ISA Server (My Network
Places), I found them correct and pointing to our ISP. Thats really
confusing !!
Please advice.
Thanks and have a nice day,
Ahmed Nabil
-----Original Message-----
From: Amy Babinchak [mailto:amy@xxxxxxxxxxxxxxxxxxxxxxxxxx]
Sent: Thursday, March 25, 2004 4:58 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
Ahmed,
I had a similar problem and finally found the problem last night.
Somehow, someway, my DNS forwarders were changed to addresses that
apparently don't exist or at least don't respond to ping. I changed them
back to the DNS provided by my ISP and all is working now.
The symptoms were that Internet access was working for many websites for
not for others. In particular support.microsoft.com, www.symantec.com,
live update and www.antivirus.com were not accessible while www.msn.com
and www.yahoo.com were. I thought I was looking for a virus but it
turned out to be the DNS forwarders.
I am left to wonder how the DNS forwarders got changed in the first
place though.
Amy
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Thursday, March 25, 2004 9:15 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
Leave it as is.
WHat have you found in the web proxy logs for those failing requests?
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Thu, 25 Mar 2004 11:58:32 +0200
"Nabil, Ahmed" <anmahmou@xxxxxxxxxx> wrote:
http://www.ISAserver.org
The Automatically detect setting is not checked in LAN Settings (Right
click Internet Explorer - Properties - Connections - LAN Settings).
Should I leave it like this or should I check it. ?
How to check the ISA Auto Detection.
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Wednesday, March 24, 2004 10:31 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
Is IE set for auto detection?
Is ISA and the network configured for auto-detection?
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://www.microsoft.com/isaserver
http://isaserver.org/Jim_Harrison
http://isatools.org
Read the help, books and articles!
----- Original Message -----
From: "Nabil, Ahmed" <anmahmou@xxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Wednesday, March 24, 2004 09:45
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
The latest hot fixes are applies and ISA Feature Pak 1
When I try to open this pages it gives me the error page not found and
sometimes "Internet Explorer can't open search page "
Thanks and have a nice day,
Ahmed
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Wednesday, March 24, 2004 4:42 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
No, I meant ISA hotfix / SP level, but that's good to know, too.
You need to operate with one client type to that you know where to look
for the log entries.
What are the sc-result codes in the failed attempts?
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Wed, 24 Mar 2004 16:16:50 +0200
"Nabil, Ahmed" <anmahmou@xxxxxxxxxx> wrote:
http://www.ISAserver.org
Jim,
The ISA Server is Win2k SP4
This is happening whether I am connecting with Web Proxy client or
firewall client. If you checked the same page after another 10
min it will open and other pages will close. This is really odd.
Please advice.
Thanks and have a nice day,
Ahmed Nabil
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Wednesday, March 24, 2004 3:52 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Some Web Pages are not opening
http://www.ISAserver.org
You should check your web proxy logs to see what pages aren't loading.
You'll have to se this infoemation to find a common point in those
requests.
What hotfix, SP level are you operating with?
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Wed, 24 Mar 2004 13:28:54 +0200
"Nabil, Ahmed" <anmahmou@xxxxxxxxxx> wrote:
http://www.ISAserver.org
Hello All,
We are having a strange problem on our ISA Server, some Web pages are
opened and the others are not I cleared the cache and
restarted ISA several times but still the same problem. For example when
you open the Internet explorer and try to open Yahoo, it
opens fine but some shortcuts inside the main page are not opening. Some
very famous web pages are not opening.
Please advice.
Thanks and have a nice day,
Ahmed
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