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Re: [Users] kernel 2.2.19, freeswan 1.97, X.509 0.9.12: problem with IKE udp packets

From: Andrea Dell'Amico (adellam_at_link.it)
Date: Fri Jul 05 2002 - 11:16:50 CEST


Il gio, 2002-07-04 alle 21:06, Andreas Steffen ha scritto:
> How large is your UDP datagram containing the certificate?
> Larger than 1500 bytes so that you experience IP fragmenting?

Yes, there's fragmentation.

> The only difference between working with raw RSA keys and
> X.509 certificates is to my knowledge the fact that the
> certificate is transmitted during IKE Main Mode, resulting
> in large packets.
>
> Can you send me a complete tcpdump of the IKE negotiation
> with X.509 certificates?
>

You can find them attached. They're in raw format, the file named
"tcpdump_ipsec_open_filters.raw" is the log of a successfully connection
obtained bringing down the udp filters. The other is the log of an
unsuccessfully connection, with udp filters up.

> Regards
>
> Andreas
>
> ======================================================================
> Andreas Steffen e-mail: andreas.steffen_at_strongsec.com
> strongSec GmbH phone: +41 76 340 25 56
> Alter Zürichweg 20 home: http://www.strongsec.com
> CH-8952 Schlieren (Switzerland)
> ==========================================[strong internet security]==

-- 
Andrea Dell'Amico - Link s.r.l. <http://www.link.it>



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