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5233
August 2nd, 2004 12:00
connecting to VPN
Hi, are there any known issues with dell latitude laptops accessing VPN servers.
We have a cisco 515E configured for 128bit PPTP using MPPE via RADIUS to the domain controller. All XP machines connect ok and most 2k machines work with the exception of two dell latitude D400 laptops which freeze at the authenticating username and password prompt.
these laptops are on SP4 and as of yesterday, the one I was testing was fully up to date with critical and windows updates.
can anyone assist please?
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meryl_streep
179 Posts
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August 17th, 2004 20:00
PPTP uses UDP. UDP packets that arrive out of order will be dropped:
http://support.microsoft.com/default.aspx?scid=kb;en-us;292788
To change this, force kerberos to use TCP instead of UDP:
http://support.microsoft.com/default.aspx?scid=kb;en-us;244474
It's a simple change to the registry and can be easily reversed if it doesn't make a difference.