[Openswan Users] Routing Issue

Luis Nagaki luis.nagaki at gmail.com
Mon Jun 11 14:03:00 EDT 2012 

I am still stuck on this,

Still can not get Routes on server side BACK if the client restarts or
reboots or connection is cut/to slow. The route works fine on client ,
i can ping the internal of the vpn server. but server -> client it
gets lost. dpd is set to restart_by_peer and dpd delay and action are
15 and 30.

some things i see..

after stopping the service on client side, and waiting about 10-15
seconds, i get this

"poller2" #5: IPsec SA expired (LATEST!)
packet from 76.26.48.XX:55058: received Vendor ID payload [Openswan
(this version) 2.6.32 ]
packet from 76.26.48.XX:55058: received Vendor ID payload [Dead Peer Detection]
packet from 76.26.48.XX:55058: received Vendor ID payload [RFC 3947]
meth=109, but port floating is off
packet from 76.26.48.XX:55058: received Vendor ID payload
[draft-ietf-ipsec-nat-t-ike-03] meth=108, but port floating is off
packet from 76.26.48.XX:55058: received Vendor ID payload
[draft-ietf-ipsec-nat-t-ike-02_n] meth=106, but port floating is off
packet from 76.26.48.XX:55058: received Vendor ID payload
[draft-ietf-ipsec-nat-t-ike-02] meth=107, but port floating is off
packet from 76.26.48.XX:55058: ignoring Vendor ID payload
[draft-ietf-ipsec-nat-t-ike-00]


its until i restart the service ipsec that the route comes back . its
frustrating.





On Mon, Jun 11, 2012 at 9:18 AM, Luis Nagaki <luis.nagaki at gmail.com> wrote:
> Ok SO i dug really hard into my log files.
>
> after stopping the service on the client i noticed this on the server
>
> vpnclient1 #12: down-client output: /usr/libexec/ipsec/_updown.netkey:
> doroute `ip route del 172.16.181.0/28 via (PUBLICIP OF SERVER) dev
> eth0 ' failed (RTNETLINK answers: No such process)
>
> pending Quick Mode with Client Public IP "vpnclient1" took too long --
> replacing phase 1
>
> let me know if this helps a bit.
>
>
> On Fri, Jun 8, 2012 at 5:03 PM, Luis Nagaki <luis.nagaki at gmail.com> wrote:
>> Also, i just got this
>> #7: ISAKMP SA expired (LATEST!)
>>  packet from "IP":4500: Informational Exchange is for an unknown
>> (expired?) SA with MSGID:0x621a00bc
>>  DPD: could not find newest phase 1 state
>>
>> i found some sites saying to take off rekey? is there a down side to that?
>>
>> On Fri, Jun 8, 2012 at 11:18 AM, Luis Nagaki <luis.nagaki at gmail.com> wrote:
>>> Everything checks out fine in the logs.
>>>
>>> i want to have a better understanding.
>>>
>>> the dpddelay and dpdtimeout .. if you increase this or decrease these
>>> follows what does it really do?
>>>
>>> I noticed that all of a sudden i had 3 tunnels, and then back down to
>>> 2 tunnels which i should have. BUT my routes stayed. this is testing
>>> if i restart the service on the client side. IF i reboot the client
>>> then thats when the routes drop and never come back even thou on the
>>> client the routes come up. the server side it never stays. is there a
>>> way to just keep the route even if it drops for 1 hr lets say or 1
>>> day, would the dpdtimeout or delay be something i want to increase to
>>> 24 hrs or something? i think i would eventually end up with like
>>> 10000's of tunnels but the delay would kill the tunnel since this is
>>> the actual keepalive delay? i just want to see if i can understand it
>>> better.
>>>
>>> On Fri, Jun 8, 2012 at 12:20 AM, David McCullough
>>> <david_mccullough at mcafee.com> wrote:
>>>>
>>>> Jivin Luis Nagaki lays it down ...
>>>>> Does anyone have any thoughts? Routes are lost on server side.  if
>>>>> client side restarts service or reboots.
>>>>
>>>> Sorry,  got tied up.  I don't have anything to add here.
>>>> Check through the logs and check what routes you do have,  perhaps there is
>>>> a routing conflict.
>>>>
>>>> Cheers,
>>>> Davidm
>>>>
>>>>> On Tue, Jun 5, 2012 at 11:09 PM, Luis Nagaki <luis.nagaki at gmail.com> wrote:
>>>>> > the only error i get is this
>>>>> >
>>>>> > vpnclient1" took too long -- replacing phase 1
>>>>> > vpnclient1" #14: initiating Main Mode to replace #12
>>>>> > vpnclient1" #14: ignoring informational payload, type
>>>>> > NO_PROPOSAL_CHOSEN msgid=00000000
>>>>> > vpnclient1" #14: received and ignored informational message
>>>>> >
>>>>> > but still ping works in 1 direction. client to server only
>>>>> >
>>>>> > On Tue, Jun 5, 2012 at 11:08 PM, Luis Nagaki <luis.nagaki at gmail.com> wrote:
>>>>> >> Well... got DPD=enabled now. i put those settings on both sides server
>>>>> >> and client and still.. routes get removed after a reboot or service
>>>>> >> reboot on client side. routes ONLY come back up if i restart the
>>>>> >> server service this sucks...
>>>>> >>
>>>>> >> On Tue, Jun 5, 2012 at 9:09 PM, David McCullough
>>>>> >> <david_mccullough at mcafee.com> wrote:
>>>>> >>>
>>>>> >>> Jivin Luis Nagaki lays it down ...
>>>>> >>>> i do get in the secure log DPD=NONE but i dont think that is the same
>>>>> >>>> as dpdaction right?
>>>>> >>>
>>>>> >>> That means DPD is not active IIRC.
>>>>> >>>
>>>>> >>>> On Tue, Jun 5, 2012 at 7:43 PM, Luis Nagaki <luis.nagaki at gmail.com> wrote:
>>>>> >>>> > i actually found a site that had a howto for an iphone setup. which is
>>>>> >>>> > not what i want but i followed it but still nothing works.
>>>>> >>>> >
>>>>> >>>> > i have in my vpnclient.conf on the client and server side..file
>>>>> >>>> > dpdaction=restart_by_peer b/c i have auto=start
>>>>> >>>
>>>>> >>>
>>>>> >>> Ok, ??just in case I have missed something, ??also add:
>>>>> >>>
>>>>> >>> ?? ?? ?? ??dpddelay = 15
>>>>> >>> ?? ?? ?? ??dpdtimeout = 30
>>>>> >>>
>>>>> >>> and see how that goes.
>>>>> >>>
>>>>> >>>> > when i reboot or restart the service on the client side, the routes
>>>>> >>>> > are gone. its not until i reboot the service on the server that the
>>>>> >>>> > routes come back =|.. im ALMOST there.. just need to fix this one
>>>>> >>>> > thing.
>>>>> >>>
>>>>> >>> Sounds like you need to get DPD enabled, ??and for some reason it isn't.
>>>>> >>> Check the openswan logs for the SA established lines and see what is
>>>>> >>> negotiated,
>>>>> >>>
>>>>> >>> Cheers,,
>>>>> >>> Davidm
>>>>> >>>
>>>>> >>>
>>>>> >>>
>>>>> >>>> >
>>>>> >>>> > On Tue, Jun 5, 2012 at 7:18 PM, David McCullough
>>>>> >>>> > <david_mccullough at mcafee.com> wrote:
>>>>> >>>> >> Jivin Luis Nagaki lays it down ...
>>>>> >>>> >>> How do i turn it on? Ive looked around for this option w no luck :/
>>>>> >>>> >>
>>>>> >>>> >> You need to set "dpdaction" to restart_by_peer for any end-points
>>>>> >>>> >> with "auto = start", ??and set it to "clear" for any with "auto = add".
>>>>> >>>> >>
>>>>> >>>> >> The basic idea is that if the end point you are configuring knows the IP
>>>>> >>>> >> address of the remote end point, ??then you want restart_by_peer, ??otherwise
>>>>> >>>> >> you want clear.
>>>>> >>>> >>
>>>>> >>>> >> You can change the timesouts for DPD if you want but I would just go with
>>>>> >>>> >> the defaults for now, ??see here:
>>>>> >>>> >>
>>>>> >>>> >> ?? ?? ?? ??http://linux.die.net/man/5/ipsec.conf
>>>>> >>>> >>
>>>>> >>>> >> Look for dpddelay, dpdtimeout and dpdaction.
>>>>> >>>> >>
>>>>> >>>> >> Cheers,
>>>>> >>>> >> Davidm
>>>>> >>>> >>
>>>>> >>>> >>>
>>>>> >>>> >>>
>>>>> >>>> >>>
>>>>> >>>> >>> On Jun 5, 2012, at 6:54 PM, David McCullough
>>>>> >>>> >>> <david_mccullough at mcafee.com> wrote:
>>>>> >>>> >>>
>>>>> >>>> >>> >
>>>>> >>>> >>> > Jivin Luis Nagaki lays it down ...
>>>>> >>>> >>> >> Ok everything is working..
>>>>> >>>> >>> >>
>>>>> >>>> >>> >> But.. final thing..
>>>>> >>>> >>> >>
>>>>> >>>> >>> >> IF i have the clients connected, and i reboot a client... once it
>>>>> >>>> >>> >> comes back online the tunnel is created, i can ping the VPN Server
>>>>> >>>> >>> >> internally. BUT i can not ping the client UNLESS i restart the ipsec
>>>>> >>>> >>> >> service. I dont want to do this everytime i lose a connection etc.
>>>>> >>>> >>> >
>>>>> >>>> >>> > Do you have dead peer detection enabled ? ??If not that should solve it for
>>>>> >>>> >>> > you,
>>>>> >>>> >>> >
>>>>> >>>> >>> > Cheers,
>>>>> >>>> >>> > Davidm
>>>>> >>>> >>> >
>>>>> >>>> >>> > --
>>>>> >>>> >>> > David McCullough, ?? ?? ??david_mccullough at mcafee.com, ??Ph:+61 734352815
>>>>> >>>> >>> > McAfee - SnapGear ?? ?? ??http://www.mcafee.com ?? ?? ?? ?? http://www.uCdot.org
>>>>> >>>> >>>
>>>>> >>>> >>>
>>>>> >>>> >>
>>>>> >>>> >> --
>>>>> >>>> >> David McCullough, ?? ?? ??david_mccullough at mcafee.com, ??Ph:+61 734352815
>>>>> >>>> >> McAfee - SnapGear ?? ?? ??http://www.mcafee.com ?? ?? ?? ?? http://www.uCdot.org
>>>>> >>>>
>>>>> >>>>
>>>>> >>>
>>>>> >>> --
>>>>> >>> David McCullough, ?? ?? ??david_mccullough at mcafee.com, ??Ph:+61 734352815
>>>>> >>> McAfee - SnapGear ?? ?? ??http://www.mcafee.com ?? ?? ?? ?? http://www.uCdot.org
>>>>> _______________________________________________
>>>>> Users at lists.openswan.org
>>>>> https://lists.openswan.org/mailman/listinfo/users
>>>>> Micropayments: https://flattr.com/thing/38387/IPsec-for-Linux-made-easy
>>>>> Building and Integrating Virtual Private Networks with Openswan:
>>>>> http://www.amazon.com/gp/product/1904811256/104-3099591-2946327?n=283155
>>>>>
>>>>>
>>>>
>>>> --
>>>> David McCullough,      david_mccullough at mcafee.com,  Ph:+61 734352815
>>>> McAfee - SnapGear      http://www.mcafee.com         http://www.uCdot.org

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