[strongSwan] Antw: Re: xauth - ikev1 - ikev2 - radius - eDir

bjoern wahl bjoern.wahl at hospital-borken.de
Tue Oct 1 17:14:40 CEST 2013

Hello Martin,

thanks for your reply.

Well, as i really would like to user the advantages of IKEv2, i would

Win7 is one of the major ClientOS used in our environment, so we have to
support that at first. ( which would fit to IKEv2).

I know that 4.4 is quite old, but if i still want to do my updates with
there is no other way but to use that.

So I would use eap-radius, and learned that I need
to use that one.

Unfortunately this is not included in StrongSwan coming with SLES11SP3,
so that 
is a thing I am actually working on. ( Maybe SDK can help me with that)

"0[DMN] Starting IKEv2 charon daemon (strongSwan 4.4.0)
00[LIB] plugin 'eap-radius': failed to load
'/usr/lib64/ipsec/plugins/libstrongswan-eap-radius.so' -
/usr/lib64/ipsec/plugins/libstrongswan-eap-radius.so: cannot open shared
object file: No such file or directory"

Other way would be to use 5.x from the sources, which seems to get more
more useful to me (keeping in mind that this would brake our SuSE

So I am working on the difficulties and if nobody here has any other
ideas i`ll
continue with "including libstrongswan-eap-radius.so in StrongSwan 4.4.0
a SLES11SP3".



>>> Martin Willi <martin at strongswan.org> 01.10.13 13.40 Uhr >>>
Hi Björn,

> So I got to the point where we need a FreeRadius to be connected to
> eDir.

> But now i am not sure what way to take. I very much like the ikev2 but
> as described here [...] We need a IKEv1 Xauth to use it.

Do you want to connect IKEv1 or IKEv2 clients to your LAN? The whole
xauth-eap thing is just required for IKEv1 clients; IKEv2 can directly
use the eap-radius plugin for EAP-MSCHAPv2 authentication.

> As Sles11Sp3 comes with strongswan-4.4.0-6.17.5 and i would not really
> like to leave the patchmanagement SuSE

4.4.0 is quite old. It supports eap-radius, but the syntax was more
limited and a little different. The wiki page [1] does not apply to this
old release: specify the RADIUS options directly in the eap-radius
section; 4.4.0 did not have support for multiple servers.

> What would be the right way to let users authenticate at out VPN
> using the credentials Freeradius get out of our eDir ? Xauth ? ikev1/2

If you have clients speaking IKEv2 (Windows 7), you should definitely go
with IKEv2. [2] has some information about basic configuration. Replace
eap-mschapv2 with eap-radius to delegate authentication. The eap-radius
plugin allows you to verify username/password over RADIUS, for example
against a FreeRADIUS AAA.



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