[Openswan Users] Fedora - L2TPD - XP-SP2 Openswan/IPSec problem

Jacco de Leeuw jacco2 at dds.nl
Thu Nov 1 17:31:45 EDT 2007

Panics Robert wrote:

> I need to create an L2TPD connection from an XP machine. Also the VPN Server
> and the client got external (public) IP addresses.
> I try to follow this howto http://www.natecarlson.com/linux/ipsec-l2tp.php,
> Nov  1 16:41:40 devel pluto[31155]: "roadwarrior-l2tp"[2] #5:
> next payload type of ISAKMP Hash Payload has an unknown value: 104

The packet does not decrypt correctly. Could be an MTU problem.
And are you sure there are no firewalls blocking ESP and UDP 500/4500?
Have you tried with a test setup first, i.e. with a client directly
connected to the server?

> Here is my ipsec.conf look like:

There are several problems with the ipsec.conf from the above link,
mostly to do with NAT. NAT does not seem to be involved here but
be advised that you will run into problems when NAT pops up
(which will be sooner or later).

Jacco de Leeuw                         mailto:jacco2 at dds.nl
Zaandam, The Netherlands           http://www.jacco2.dds.nl

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