FW: [VPN] Using MS L2TP/IPSec and NAT

[Klein, Alan Martin (Alan)]

Not a hack but it looks like Microsoft is going to address the NAT issue in a future release of client / server. See the following URL for more information:

http://www.microsoft.com/windows2000/server/evaluation/news/bulletins/l2tpclient.asp

-----Original Message-----
From: Christopher Gripp [mailto:cgripp at axcelerant.com]
Sent: Tuesday, August 27, 2002 4:08 PM
To: vpn at lists.shmoo.com
Subject: [VPN] Using MS L2TP/IPSec and NAT


I have recently been asked to support a VPN that uses encaps L2TP in
IPSec.  The user states that the MS implementation uses AH only and
therefore will not work from behind a NAT device.  I am very aware of
all the implications of NAT and AH and have no argument there.  My
question is, is anyone aware of some workaround or fix that is native to
MS that would allow this implementation to be passed through a NAT
device at the remote end point.  A reg hack, something?


CG
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