Re: Help: Norton Personal Firewall blocks Windows Remote Desktop -- PCTECH

Subject: Re: [PCTECH] Help: Norton Personal Firewall blocks Windows Remote Desktop
From: Ken Sims <mr3111@xxxxxxxxx>
Date: Mon, 12 Jan 2004 19:52:20 -0800
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Hi Vern -

I also see an information record that seems to be wrong - "invalid TCP header length" in a packet, from the machine I'm trying to connect to with Remote Desktop. So it seems that I'm getting through the VPN router - or maybe not - maybe IT is returning the bad stuff, but that doesn't make much sense.

Additional information is added to the VPN packets which can cause them to exceed the MTU. Fragmentation and reassembly should take care of this automatically, but you might want to try lowering your MTU to around 1440. (I have not needed to do this myself.)

-- Ken http://www.ke9nr.net/ Opinions expressed are my own and do not necessarily represent the views of my employer or anyone in their right mind.

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