<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello Strongswan users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have some basic question on how to enable a particular strongswan connection as responder only. Basically another peer (security gateway) will try to establish a IKE/IPsec connection towards strongswan in responder mode. I tried the following configuration and strongswan seems to report error.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>config setup<o:p></o:p></p><p class=MsoNormal> charondebug=all<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>conn %default<o:p></o:p></p><p class=MsoNormal> keyingtries=1<o:p></o:p></p><p class=MsoNormal> keyexchange=ikev2<o:p></o:p></p><p class=MsoNormal> reauth=no<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>conn peering<o:p></o:p></p><p class=MsoNormal> left=172.16.20.51<o:p></o:p></p><p class=MsoNormal> leftfirewall=no<o:p></o:p></p><p class=MsoNormal> leftauth=psk<o:p></o:p></p><p class=MsoNormal> right=172.16.20.2<o:p></o:p></p><p class=MsoNormal> rightauth=psk<o:p></o:p></p><p class=MsoNormal> <b>auto=add<o:p></o:p></b></p><p class=MsoNormal> esp=aes-sha1-modp1024<o:p></o:p></p><p class=MsoNormal> ike=aes-sha1-md5-modp1024<o:p></o:p></p><p class=MsoNormal> type=tunnel<o:p></o:p></p><p class=MsoNormal> rekey=yes<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>/var/log/messages shows<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sep 5 00:21:06 acme95 charon-custom: 00[JOB] spawning 16 worker threads<o:p></o:p></p><p class=MsoNormal>Sep 5 00:21:06 acme95 charon-custom: 09[CFG] received stroke: add connection 'peering'<o:p></o:p></p><p class=MsoNormal>Sep 5 00:21:06 acme95 charon-custom: 09[CFG] added configuration 'peering'<o:p></o:p></p><p class=MsoNormal><b>Sep 5 00:21:36 acme95 charon-custom: 10[NET] received packet: from 172.16.20.51[500] to 172.16.20.2[500] (420 bytes)<o:p></o:p></b></p><p class=MsoNormal><b>Sep 5 00:21:36 acme95 charon-custom: 10[ENC] payload type TRAFFIC_SELECTOR_INITIATOR was not encrypted<o:p></o:p></b></p><p class=MsoNormal><b>Sep 5 00:21:36 acme95 charon-custom: 10[ENC] could not decrypt payloads<o:p></o:p></b></p><p class=MsoNormal><b>Sep 5 00:21:36 acme95 charon-custom: 10[IKE] integrity check failed<o:p></o:p></b></p><p class=MsoNormal><b>Sep 5 00:21:36 acme95 charon-custom: 10[IKE] IKE_SA_INIT request with message ID 0 processing failed<o:p></o:p></b></p><p class=MsoNormal><b><o:p> </o:p></b></p><p class=MsoNormal>Also I attempted to enable debug logging, but I do not see any more details beyond the above details.<o:p></o:p></p><p class=MsoNormal><b><o:p> </o:p></b></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Balaji<o:p></o:p></p></div></body></html>