[strongSwan] Split tunneling

Fri Oct 22 15:47:17 CEST 2010

So strongswan should send the exact same message, except for the actual string ?

On Friday 22 October 2010 15:37:46 Andreas Steffen wrote:
> But if you replace the standard banner by one defined via attr-sql,
> it fails? Strange!
> 
> On 22.10.2010 15:04, Claude Tompers wrote:
> > It still does, if I do not set the attribute, I see the "standard" banner.
> > 
> > regards,
> > Claude
> > 
> > 
> > On Friday 22 October 2010 14:52:36 Andreas Steffen wrote:
> >> I remember that the default banner "Welcome to Linux strongSwan"
> >> always worked with the Cisco client, though.
> >>
> >> Regards
> >>
> >> Andreas
> >>
> >>  On 22.10.2010 14:29, Claude Tompers wrote:
> >>> Hello Andreas,
> >>>
> >>> They all fail, as soon as I set one of them (unity_def_domain /
> >>> banner / unity_split_include). Cisco client says "Negotiating
> >>> security policies" and it fails. If I don't have any of those
> >>> attributes set, it immediately passes on to saying "Securing channel
> >>> communication" and succeeds.
> >>>
> >>> kind regards, Claude
> >>>
> >>>
> >>> On Friday 22 October 2010 14:06:55 Andreas Steffen wrote:
> >>>> Hello Claude,
> >>>>
> >>>> it is not evident from the log which attribute[s] the Cisco VPN
> >>>> client doesn't like. I recommend to remove all Cisco_Unity
> >>>> attributes from the SQLite database keeping only the virtual IP so
> >>>> that the negotiation goes on to Quick Mode and then add back the
> >>>> attributes one-by-one until ModeCfg fails so that the actual error
> >>>> can be identified.
> >>>>
> >>>> I just know that Astaro got the split tunneling working since we
> >>>> jointly developed the attr-sql functionality but I didn't test the
> >>>> interoperability with the Chisco client myself.
> >>>>
> >>>> Regards
> >>>>
> >>>> Andreas
> >>>>
> >>>> On 22.10.2010 11:40, Claude Tompers wrote:
> >>>>> I attached the Ciso log. I think the interesting part starts at
> >>>>> message 24.
> >>>>>
> >>>>> kind regards, Claude
> >>>>>
> >>>>>
> >>>>> On Friday 22 October 2010 11:27:24 Andreas Steffen wrote:
> >>>>>> Hmmm, it seems that the Cisco client doesn't like strongSwan's
> >>>>>> ModeCfg reply containing all these Cisco Unity attributes
> >>>>>> because it just keeps retransmitting the ModeCfg request. Could
> >>>>>> you find out what errors occur in the Cisco log?
> >>>>>>
> >>>>>> Regards
> >>>>>>
> >>>>>> Andreas
> >>>>>>
> >>>>>> On 22.10.2010 10:48, Claude Tompers wrote:
> >>>>>>> Hi Andreas,
> >>>>>>>
> >>>>>>> Setting the leftsubnet did not work. You can find the pluto
> >>>>>>> log attached.
> >>>>>>>
> >>>>>>> thank you Claude
> >>>>>>>
> >>>>>>>
> >>>>>>> On Friday 22 October 2010 10:24:24 Andreas Steffen wrote:
> >>>>>>>> Hello Claude,
> >>>>>>>>
> >>>>>>>> could you provide some pluto logs with
> >>>>>>>>
> >>>>>>>> plutodebug=all
> >>>>>>>>
> >>>>>>>> set in ipsec.conf?
> >>>>>>>>
> >>>>>>>> Regards
> >>>>>>>>
> >>>>>>>> Andreas
> >>>>>>>>
> >>>>>>>> BTW On second thought leftsubnet on the strongSwan gateway 
> >>>>>>>> should be set to the subnet communicated the Cisco client
> >>>>>>>> via the unity_split_include attribute since the client will
> >>>>>>>> probably used them during Quick Mode. I don't know if
> >>>>>>>> multiple subnets will cause several Quick Modes to be set
> >>>>>>>> up, though.
> >>>>>>>>
> >>>>>>>> Regards
> >>>>>>>>
> >>>>>>>> Andreas
> >>>>>>>>
> >>>>>>>> On 22.10.2010 09:55, Claude Tompers wrote:
> >>>>>>>>> Hello Andreas,
> >>>>>>>>>
> >>>>>>>>> Thank you for your quick reply. Sadly, it does not work,
> >>>>>>>>> but I think we're on the right path. The Cisco client
> >>>>>>>>> tells me "Negotiating security policies" before it stops
> >>>>>>>>> silently. On the other side, I don't see much in the
> >>>>>>>>> pluto logs. Any ideas ?
> >>>>>>>>>
> >>>>>>>>> kind regards, Claude
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> On Thursday 21 October 2010 12:22:56 Andreas Steffen
> >>>>>>>>> wrote:
> >>>>>>>>>> Hello Claude,
> >>>>>>>>>>
> >>>>>>>>>> yes it should be possible with the Cisco_Unity
> >>>>>>>>>> functionality added to the attr-sql plugin with
> >>>>>>>>>> strongswan-4.4.1:
> >>>>>>>>>>
> >>>>>>>>>> - Enable the attr-sql and sqlite plugins
> >>>>>>>>>>
> >>>>>>>>>> ./configure ... --enable-sqlite --enable-attr-sql
> >>>>>>>>>>
> >>>>>>>>>> - Create an SQLite database:
> >>>>>>>>>>
> >>>>>>>>>> cat
> >>>>>>>>>> strongswan-4.4.1/testing/hosts/default/etc/ipsec.d/tables.sql
> >>>>>>>>>> | sqlite3 /etc/ipsec.d/ipsec.db
> >>>>>>>>>>
> >>>>>>>>>> - Define the path to the database in strongswan.conf
> >>>>>>>>>>
> >>>>>>>>>> libhydra { plugins { attr-sql { database =
> >>>>>>>>>> sqlite:///etc/ipsec.d/ipsec.db } } }
> >>>>>>>>>>
> >>>>>>>>>> - Create a virtual IP pool in the database using the
> >>>>>>>>>> ipsec pool tool
> >>>>>>>>>>
> >>>>>>>>>> ipsec pool -add mypool --start 10.3.0.1 --end
> >>>>>>>>>> 10.3.0.254 --timeout 48
> >>>>>>>>>>
> >>>>>>>>>> - Add internal DNS and WINS servers
> >>>>>>>>>>
> >>>>>>>>>> ipsec pool --addattr dns  --server 10.1.0.10 ipsec pool
> >>>>>>>>>> --addattr dns  --server 10.1.1.10 ipsec pool --addattr
> >>>>>>>>>> nbns --server 10.1.0.20 ipsec pool --addattr nbns
> >>>>>>>>>> --server 10.1.1.20
> >>>>>>>>>>
> >>>>>>>>>> - Add default domain
> >>>>>>>>>>
> >>>>>>>>>> ipsec pool --addattr unity_def_domain  --string
> >>>>>>>>>> "strongswan.org"
> >>>>>>>>>>
> >>>>>>>>>> - Add welcome banner
> >>>>>>>>>>
> >>>>>>>>>> ipsec pool --addattr banner --string "The network will
> >>>>>>>>>> be down from 6-8 pm"
> >>>>>>>>>>
> >>>>>>>>>> - Add split tunneling subnets !!!
> >>>>>>>>>>
> >>>>>>>>>> ipsec pool --addattr unity_split_include --subnet 
> >>>>>>>>>> "10.1.0.0/255.255.0.0,10.3.5.0/255.255.255.0"
> >>>>>>>>>>
> >>>>>>>>>> - List all configured attributes
> >>>>>>>>>>
> >>>>>>>>>> ipsec pool --statusattr
> >>>>>>>>>>
> >>>>>>>>>> - Configure the pool in ipsec.conf
> >>>>>>>>>>
> >>>>>>>>>> conn rw-cisco right=%any rightsourceip=%mypool 
> >>>>>>>>>> leftsubnet=0.0.0.0/0
> >>>>>>>>>>
> >>>>>>>>>> I haven't actually tested this with the Cisco VPN
> >>>>>>>>>> Client but it should work so that only traffic to the
> >>>>>>>>>> 10.1.0.0/16 and 10.3.5.0/24 networks are tunneled.
> >>>>>>>>>>
> >>>>>>>>>> Regards
> >>>>>>>>>>
> >>>>>>>>>> Andreas
> >>>>>>>>>>
> >>>>>>>>>> On 21.10.2010 10:57, Claude Tompers wrote:
> >>>>>>>>>>> Hello,
> >>>>>>>>>>>
> >>>>>>>>>>> Is it possible to do split tunneling with CISCO VPN
> >>>>>>>>>>> client and pluto so that a road-warrior is still able
> >>>>>>>>>>> to access i.e. printers in his local network ?
> >>>>>>>>>>>
> >>>>>>>>>>> kind regards Claude
> >>
> >> ======================================================================
> >> Andreas Steffen                         andreas.steffen at strongswan.org
> >> strongSwan - the Linux VPN Solution!                www.strongswan.org
> >> Institute for Internet Technologies and Applications
> >> University of Applied Sciences Rapperswil
> >> CH-8640 Rapperswil (Switzerland)
> >> ===========================================================[ITA-HSR]==
> >>
> > 
> 
> 
> 

-- 
Claude Tompers
Ingénieur réseau et système
Fondation RESTENA - Réseau Téléinformatique de l'Education Nationale et de la Recherche
6, rue Richard Coudenhove-Kalergi
L-1359 Luxembourg

Tel: +352 424409 1
Fax: +352 422473
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