Date: Wed, 4 Feb 2004 15:34:43 -0500 From: "Karim Fodil-Lemelin" <kfl@xiphos.ca> To: "Marco Berizzi" <pupilla@hotmail.com>, <freebsd-net@freebsd.org> Subject: RE: ipsec ipcomp between FreeS/WAN 2.04 and FreeBSD 5.2 Message-ID: <IIEILJHMKBNNNIJGGJIBAEANDBAA.kfl@xiphos.ca> In-Reply-To: <Sea2-DAV70BAZg1jlMo00012e8e@hotmail.com>
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Hi, I tried that before and couldn't get it working :( Then I asked the Kame peps and it seems that ipcomp is not supported yet in tunnel mode. That was for FreeBSD 4.8 and I don't think it has changed since then. Karim. > -----Original Message----- > From: owner-freebsd-net@freebsd.org > [mailto:owner-freebsd-net@freebsd.org]On Behalf Of Marco Berizzi > Sent: 3 février, 2004 12:19 > To: freebsd-net@freebsd.org > Subject: ipsec ipcomp between FreeS/WAN 2.04 and FreeBSD 5.2 > > > Hello everybody. > > I'm running an interop issue with IPSec tunnels > between FreeS/WAN and FreeBSD 5.2 > Without IPComp tunnel are successfully established. > With IPComp enabled tunnel are again successfully > established but there is no traffic flow. > > This is my setkey init (FreeBSD box side): > > /usr/local/sbin/setkey -c <<EOF > flush; > spdflush; > spdadd 10.1.2.0/24 10.1.1.0/24 any -P in ipsec > ipcomp/tunnel/172.16.1.247-172.16.1.226/use > esp/tunnel/172.16.1.247-172.16.1.226/require; > > spdadd 10.1.1.0/24 10.1.2.0/24 any -P out ipsec > ipcomp/tunnel/172.16.1.226-172.16.1.247/use > esp/tunnel/172.16.1.226-172.16.1.247/require; > EOF > > However with this kind of init file FreeS/WAN is dropping packet > coming from the FreeBSD box. > Michael Richardson (fsw mantainer) reply me telling: > > "... The packets that racoon is telling the system to build > would appear to have been constructed like: > > orig IPsrc = 10.1.1.1,IPdst = 10.1.2.1 > IPcomp > * IPsrc = 172.16.1.247,IPdst=172.16.1.226 > ESP > outer IPsrc = 172.16.1.247,IPdst=172.16.1.226 > > [...] This packet format is in error. It defeats most of the > point of using > IPcomp, which is to compress the inner-IP header out. It appears > that a new > IP header has been added. > If the 2.6.0 kernel accepts this, then I wonder what other things it > might accept! The IPIP header marked "*" is completely superfluous and > a waste of 20 bytes. ..." > > The full thread available at https://lists.freeswan.org/archives/design/2003-December/msg00032.html The thread is about FreeS/WAN and kernel 2.6 (2.6 IPSec stack is a KAME based). However Linux 2.6 and FreeBSD have the same behaviour. Comments? TIA PS: Please CC me. I'm not subscribed to the list. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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