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Web browing slow - 18.Sep.2008 7:27:10 AM

gazy007

Posts: 30
Joined: 29.Aug.2008
Status: offline

I work for this company and I did set up an Isa server2004 by just looking at train signal videos and articles. It was okay till last week but now all users are complaining it takes too long to open the web page. Today it was not even opening the pages at all but I restarted services a few time and got it working but very slow.
Any idea guys..?

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RE: Web browing slow - 18.Sep.2008 7:30:46 AM

Jason Jones

Posts: 2256
Joined: 30.Jul.2002
From: United Kingdom
Status: offline

Problems with DNS and/or the 'Path MTU' problems are two issues that come to mind...

Run the ISA Best Practice Analyser to check for the Path MTU issues.

Do some manual lookups at various point in your topoligy with 'nslookup' to see if DNS is repsonding as it should...

Cheers

JJ

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Jason Jones (MVP)

Silversands Limited http://www.silversands.co.uk
My Blog: http://blog.msfirewall.org.uk/

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(in reply to gazy007)

Post #: 2

RE: Web browing slow - 18.Sep.2008 7:30:56 AM

gazy007

Posts: 30
Joined: 29.Aug.2008
Status: offline

I have tried tracert from one of the users machine it comes up host unreachable. I tried changing Dns but still no difference as soon as you click on Internet Explorere it thinks detecting proxy setting for about 40 to 50 seconds.

(in reply to gazy007)

Post #: 3

RE: Web browing slow - 18.Sep.2008 7:38:43 AM

Jason Jones

Posts: 2256
Joined: 30.Jul.2002
From: United Kingdom
Status: offline

quote:

ORIGINAL: gazy007

I have tried tracert from one of the users machine it comes up host unreachable. I tried changing Dns but still no difference as soon as you click on Internet Explorere it thinks detecting proxy setting for about 40 to 50 seconds.

Right, so web browsing is not slow once the proxy is found, but the proxy autodetect feature when you start IE is? How is IE configured? Are you using WPAD?

Have you tried manually defining a proxy server - does this fix the problem?

Cheers

JJ

< Message edited by Jason Jones -- 18.Sep.2008 7:39:58 AM >

_____________________________

Jason Jones (MVP)

Silversands Limited http://www.silversands.co.uk
My Blog: http://blog.msfirewall.org.uk/

Get our NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8

(in reply to gazy007)

Post #: 4

RE: Web browing slow - 18.Sep.2008 7:41:51 AM

Jason Jones

Posts: 2256
Joined: 30.Jul.2002
From: United Kingdom
Status: offline

This script might be handy to test you autoconfig setup:

http://www.isatools.org/tools/testautoconfig.vbs

Cheers

JJ

_____________________________

Jason Jones (MVP)

Silversands Limited http://www.silversands.co.uk
My Blog: http://blog.msfirewall.org.uk/

Get our NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8

(in reply to Jason Jones)

Post #: 5

RE: Web browing slow - 18.Sep.2008 8:43:05 AM

gazy007

Posts: 30
Joined: 29.Aug.2008
Status: offline

Thanks mate but still the same speed on browsing. Cos Last week it was fine but this week I have to admit it is a bit slow.

(in reply to Jason Jones)

Post #: 6

RE: Web browing slow - 18.Sep.2008 7:34:37 PM

elmajdal

Posts: 5106
Joined: 16.Sep.2004
From: Lebanese in Kuwait
Status: offline

Hi,

have you tested what was suggested by Jason ?

quote:

Have you tried manually defining a proxy server - does this fix the problem?

_____________________________

Tarek Majdalani

MS Forefront Edge Security MVP
Website : http://www.elmajdal.net/ISAServer
New Section : http://www.elmajdal.net/Win2k8

(in reply to gazy007)

Post #: 7

RE: Web browing slow - 19.Sep.2008 7:39:02 AM