Hi. Usual non-subscriber CC replies request please.
There is a problem with 2.6.25(.4) using IPSEC on ipv4. You seem to need
to have ipv6 available otherwise a protocol not supported error is
returned when trying to set a Security Association Database. I'm using
setkey on a file but another user on the ipsec-tools-devel list reported
the same issue using racoon.
http://marc.info/?l=ipsec-tools-devel&m=121015164014761&w=2
So with modules loaded you expect to work.
$ lsmod
Module Size Used by
authenc 5056 0
ah4 4672 0
esp4 5824 0
aead 5824 2 authenc,esp4
xfrm4_mode_tunnel 2176 20
A static file with tunnel configuration for laptop to desktop over open
wireless not running WEP/WPA.
$ head -n 12 /etc/ipsec.conf
#!/usr/sbin/setkey -f
flush;
spdflush;
add 1.1.1.1 2.2.2.2 esp 0x500 -m tunnel
-E rijndael-cbc 0x...
-A hmac-sha1 0x...;
add 2.2.2.2 1.1.1.1 esp 0x501 -m tunnel
-E rijndael-cbc 0x...
-A hmac-sha1 0x...;
You get protocol not supported error.
$ setkey -f /etc/ipsec.conf
The result of line 8: Protocol not supported.
The result of line 12: Protocol not supported.
But after modprobing ipv6 which automatically pulls
in xfrm6_mode_tunnel, setkey starts working and I can communicate via
IPSEC.
$ lsmod
Module Size Used by
xfrm6_mode_tunnel 2048 4
ipv6 217444 10 xfrm6_mode_tunnel
authenc 5056 4
ah4 4672 0
esp4 5824 4
aead 5824 2 authenc,esp4
xfrm4_mode_tunnel 2176 28
It really shouldn't need ipv6. Full kernel config, lsmod before and
after modprobing ipv6 are available at below URL's.
http://www.swanson.ukfsn.org/ipsec/config
http://www.swanson.ukfsn.org/ipsec/lsmod-post-modprobe-ipv6
http://www.swanson.ukfsn.org/ipsec/lsmod-pre-modprobe-ipv6
--
Alan.
"One must never be purposelessnessnesslessness."
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