RE: OT FYI: Banking websites
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Mon, 19 May 2003 19:12:41 -0500
Hi John,
This is interesting. Do you have information on the details on why this
has happened? Do you need to change the MTU on all internal network
clients, just WinXP clients, or everything that moves? :-)
Thanks!
Tom
Thomas W Shinder
www.isaserver.org/shinder
ISA Server and Beyond: http://tinyurl.com/1jq1
Configuring ISA Server: http://tinyurl.com/1llp
-----Original Message-----
From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
Sent: Friday, May 16, 2003 1:11 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] OT FYI: Banking websites
http://www.ISAserver.org
Information for anyone having problems reaching certain banking sites
using
IE on Windows XP PRO, Wells Fargo in particular.
1. Run updates, including Q324929, Q810847 and Q813951.
2. MTU size on client must be smaller than that of any firewall you are
going through. Example, if the firewall is set to 1452 outgoing, client
MTU
must be no larger than 1448.
While normally we only worry about MTU size on PPPoE connections or when
dealing with router problems when setting up VPN, it appears Wells Fargo
changed something about 2 1/2 weeks ago. (Even then, that is usually
only
done on the firewall or router.)
This problem has only been verified on Windows XP. Windows 2000 server
does
not seem to be affected when the updates are installed.
I spent 3 days working on this with MS Support.
John Tolmachoff MCSE CSSA
Engineer/Consultant
eServices For You
www.eservicesforyou.com
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