<div dir="ltr"><div dir="ltr"><div><div>Hi Andreas <br><br></div>On server side, I am using :- <br>Linux strongSwan U4.6.2/<br><br></div>And, on modem side :-<br>Linux[Debian, Voyage] strongSwan U4.4.1<br></div><br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><b style="color:rgb(136,136,136);font-family:"trebuchet ms",sans-serif;font-size:13px">Best Regards</b><br></div><div><b style="color:rgb(136,136,136);font-family:'trebuchet ms',sans-serif;font-size:13px">Nitin Agarwal</b><br></div><div><span><b style="color:rgb(136,136,136);font-family:'trebuchet ms',sans-serif;font-size:13px">Team Leader R&D</b></span><br style="color:rgb(136,136,136);font-family:'trebuchet ms',sans-serif;font-size:13px"></div><div><b style="color:rgb(136,136,136);font-family:'trebuchet ms',sans-serif;font-size:13px">Symstream Technology Group</b><br style="color:rgb(136,136,136);font-family:'trebuchet ms',sans-serif;font-size:13px">
<span style="font-family:'trebuchet ms',sans-serif;font-size:13px;color:rgb(102,102,102)">M +91 9818893018<br><u><a href="mailto:nitin.agarwal@symstream.com" target="_blank">nitin.agarwal@symstream.com</a></u> | Skype: nitin_symstream</span><br><br><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> </blockquote><div><br></div><br><br></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Tue, Jul 28, 2015 at 3:22 PM, Andreas Steffen <span dir="ltr"><<a href="mailto:andreas.steffen@strongswan.org" target="_blank">andreas.steffen@strongswan.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Nitin,<br>
<br>
what VPN product is running on the server, since 1) it produces<br>
notifications in an invalid format and 2) it probably speaks<br>
IKEv1 only, because it replies with INVALID_MAJOR_VERSION to<br>
an IKEv2 request?<br>
<br>
Best regards<br>
<br>
Andreas<span class=""><br>
<br>
On 28.07.2015 10:40, Nitin Agarwal wrote:<br>
</span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">
Hi Noel<br>
<br>
I have done the changes, But still the tunnels are down for upto 10<br>
minutes, sometime.<br>
This is what I got from Syslog, and these errors are different at<br>
different times :-<br>
<br>
1)<br>
Jul 28 09:28:36 alix6f2-619703 charon: 12[IKE] initiating IKE_SA<br>
52.64.105.113_cnc[2] to 52.74.240.246<br>
Jul 28 09:28:36 alix6f2-619703 charon: 12[ENC] generating IKE_SA_INIT<br>
request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ]<br>
Jul 28 09:28:36 alix6f2-619703 charon: 12[NET] sending packet: from<br>
100.116.187.100[500] to 52.74.240.246[500]<br>
Jul 28 09:28:37 alix6f2-619703 charon: 16[NET] received packet: from<br>
52.74.240.246[500] to 100.116.187.100[500]<br>
Jul 28 09:28:37 alix6f2-619703 charon: 16[ENC] invalid notify data<br>
length for INVALID_MAJOR_VERSION (20)<br></span>
Jul 28 09:28:37 alix6f2-619703 charon: 16[ENC] *NOTIFY payload<br>
verification failed *<span class=""><br>
Jul 28 09:28:37 alix6f2-619703 charon: 16[IKE] IKE_SA_INIT response with<br>
message ID 0 processing failed<br>
Jul 28 09:28:40 alix6f2-619703 charon: 13[IKE] retransmit 1 of request<br>
with message ID 0<br>
<br>
<br>
2) Jul 28 09:29:40 alix6f2-619703 charon: 13[ENC] generating IKE_SA_INIT<br>
request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ]<br>
Jul 28 09:29:40 alix6f2-619703 charon: 13[NET] sending packet: from<br>
100.116.187.100[500] to 52.74.240.246[500]<br>
Jul 28 09:29:41 alix6f2-619703 charon: 16[NET] received packet: from<br>
52.74.240.246[500] to 100.116.187.100[500]<br>
Jul 28 09:29:41 alix6f2-619703 charon: 16[ENC] parsed IKE_SA_INIT<br>
response 0 [ N(INVAL_SYN) ]<br></span>
Jul 28 09:29:41 alix6f2-619703 charon: 16[IKE]*received INVALID_SYNTAX<br>
notify error *<span class=""><br>
<br>
<br>
can anybody please suggest why this is happening ?<br>
<br>
<br>
<br>
<br></span>
*Best Regards*<br>
*Nitin Agarwal*<span class=""><br>
<br>
<br>
<br>
<br>
<br>
<br>
On Wed, Jul 22, 2015 at 3:59 PM, Noel Kuntze <<a href="mailto:noel@familie-kuntze.de" target="_blank">noel@familie-kuntze.de</a><br></span><div><div class="h5">
<mailto:<a href="mailto:noel@familie-kuntze.de" target="_blank">noel@familie-kuntze.de</a>>> wrote:<br>
<br>
<br>
-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA256<br>
<br>
Hello Nitin,<br>
<br>
You're using IKEv2, which uses a global timeout setting in<br>
strongswan.conf,<br>
not dpdtimeout.<br>
- From the man page for ipsec.conf:<br>
dpdtimeout = 150s | <time><br>
defines the timeout interval, after which all<br>
connections to a peer are deleted in case of inactivity. This only<br>
applies to IKEv1, in IKEv2 the default retransmission<br>
timeout applies, as every exchange is used to detect<br>
dead peers.<br>
<br>
Look at the "IKEv2 RETRANSMISSION" section of the man page for<br>
strongswan.conf.<br>
<br>
Alternatively, use IKEv1.<br>
<br>
Mit freundlichen Grüßen/Kind Regards,<br>
Noel Kuntze<br>
<br>
GPG Key ID: 0x63EC6658<br>
Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658<br>
<br>
Am 22.07.2015 um 07:26 schrieb Nitin Agarwal:<br>
> Hello Guys<br>
><br>
> I am trying to achieve stable tunnel connectivity between two systems.<br>
> My System 1 is a modem having ppp connection.And, System 2 is a server.<br>
><br>
> On System 1, IP use to change and whenever IP changes, sometime system takes upto 20 minutes to form stable tunnel. Sometime is just 50 seconds also. PPP connection takes around 25 seconds to release old IP and acquire new one.<br>
><br>
> I am attaching the existing configuration.<br>
> Please suggest, if I need to modify the configurations or I am missing something.<br>
><br>
><br>
><br>
><br>
> *Best Regards*<br>
> *Nitin Agarwal*<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
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</span></blockquote><span class="HOEnZb"><font color="#888888">
<br>
-- <br>
======================================================================<br>
Andreas Steffen <a href="mailto:andreas.steffen@strongswan.org" target="_blank">andreas.steffen@strongswan.org</a><br>
strongSwan - the Open Source VPN Solution! <a href="http://www.strongswan.org" rel="noreferrer" target="_blank">www.strongswan.org</a><br>
Institute for Internet Technologies and Applications<br>
University of Applied Sciences Rapperswil<br>
CH-8640 Rapperswil (Switzerland)<br>
===========================================================[ITA-HSR]==<br>
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