RE: OT FYI: Banking websites

  • From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
  • To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
  • Date: Mon, 19 May 2003 17:31:42 -0700

It appears it only affect WinXP Clients.

John Tolmachoff MCSE CSSA
Engineer/Consultant
eServices For You
www.eservicesforyou.com


> -----Original Message-----
> From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx]
> Sent: Monday, May 19, 2003 5:13 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: OT FYI: Banking websites
> 
> http://www.ISAserver.org
> 
> 
> 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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