[isalist] Re: VPN SLow
- From: "Glenn P. JOHNSTON" <glenn.johnston@xxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Wed, 23 Aug 2006 20:49:37 +1000
http://www.ISAserver.org
-------------------------------------------------------
About 12 months ago, I had issues at a site, where they were complaining
about a sudden slowness of inbound VPN connections.
After some hunting around on the server, and finding nothing obvious,
but first hand confirming that the VPN performance was indeed far from
what you'd expect, I spotted a newish looking empty box for an ADSL
modem, sitting on a shelf near the server. I asked a few questions, and
yes, it had just recently been replaced, and yes, that probably did
coincide with the slow VPN developing.
Upgraded the modem to the latest firmware, and all was back to normal.
Seems the firmware that shipped with the router had an issue with VPN,
which a subsequent release of the firmware had corrected. In the end a
relatively easy fix, but not an immediately obvious one, as the modem
router was performing fine for WEB / EMAIL etc.
-----Original Message-----
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Shamshad Ahmad
Sent: Wednesday, 23 August 2006 16:10
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: VPN SLow
http://www.ISAserver.org
-------------------------------------------------------
My DNS suffix is right . so i think it should not be nameresolution
issue .
anyways i will try CMAK too
Regard,
Shamshad Ahmad
shamshad@xxxxxxxxxxxxxx
http://www.obtainmyip.com
Know your IP
----- Original Message -----
From: "Edgardo Balansay" <balansay@xxxxxxxxx>
To: <isalist@xxxxxxxxxxxxx>
Sent: Wednesday, August 23, 2006 1:32 AM
Subject: [isalist] Re: VPN SLow
> http://www.ISAserver.org
> -------------------------------------------------------
> Hello,
>
> I'm thinking name resolution issues. Did you configure their VPN with
> the CMAK (Connection Manager Administration Kit)? With CMAK you could
> also specify DNS servers for VPN clients to use, thereby 'speeding' up
> when VPN clients look for server names.
>
> Actually, you can try testing this by accessing the server by IP
> address, does the delays still exhibit? If so then name resolution
> might be the problem, if not, then look elsewhere. Are the delays
> throughout the session, or only when *first* connecting to the server?
>
> Laters!
> Edgardo
>
> On 8/21/06, Shamshad Ahmad <shamshad@xxxxxxxxxxxxxx> wrote:
>>
>> Dear All
>>
>> I have setup VPN on ISA 2004 , my internet link is 1 MBPS . I have
also
>> enabled DHCP relay in ISA asper some article on ISASERVER.ORG website
.my
>> users are complaining slow access to server . right now only four
users
>> are
>> testing the VPN they too don't connect simultaneously . where can
look
>> for
>> bottleneck ?
>>
>> any suggestion will be great help
>>
>>
>>
>> Regard,
>> Shamshad Ahmad
>> shamshad@xxxxxxxxxxxxxx
>> http://www.obtainmyip.com
>> Know your IP
> ------------------------------------------------------
> List Archives: //www.freelists.org/archives/isalist/ ISA Server
> Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server
> Articles and Tutorials: http://www.isaserver.org/articles_tutorials/
ISA
> Server Blogs:
> http://blogs.isaserver.org/
------------------------------------------------------
> Visit TechGenix.com for more information about our other sites:
> http://www.techgenix.com
------------------------------------------------------
> To unsubscribe visit http://www.isaserver.org/pages/isalist.asp Report
> abuse to listadmin@xxxxxxxxxxxxx
------------------------------------------------------
List Archives: //www.freelists.org/archives/isalist/
ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp
ISA Server Articles and Tutorials:
http://www.isaserver.org/articles_tutorials/
ISA Server Blogs: http://blogs.isaserver.org/
------------------------------------------------------
Visit TechGenix.com for more information about our other sites:
http://www.techgenix.com
------------------------------------------------------
To unsubscribe visit http://www.isaserver.org/pages/isalist.asp
Report abuse to listadmin@xxxxxxxxxxxxx
------------------------------------------------------
List Archives: //www.freelists.org/archives/isalist/
ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp
ISA Server Articles and Tutorials: http://www.isaserver.org/articles_tutorials/
ISA Server Blogs: http://blogs.isaserver.org/
------------------------------------------------------
Visit TechGenix.com for more information about our other sites:
http://www.techgenix.com
------------------------------------------------------
To unsubscribe visit http://www.isaserver.org/pages/isalist.asp
Report abuse to listadmin@xxxxxxxxxxxxx
Other related posts:
