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<p class="MsoNormal">Hi!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I have an IPsec tunnel connection between Strongswan and a Cisco device that looks roughly as follows<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> left=<mypublicip><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> right=<theirpublicip><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> leftsubnet=<ourinternalnetwork><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> rightsubnet=<theirinternalnetwork><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> keyexchange=ikev1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> ike=aes256-sha1-modp1536!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> ikelifetime=3600s<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> esp=aes256-sha1-modp1536!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> keylife=3600s<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> type=tunnel<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> compress=no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> authby=secret<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> auto=start<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> keyingtries=%forever<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">There are no tunnel ip addresses in use and configuring one with leftsourceip breaks the connection. I would like to have a VTI interface representing the tunnel. This would simplify packet capture and iptables configuration.
However, all the examples I could find configured the VTI interface with local and remote IP address. Is my intended configuration even possible?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Felix Berlakovich<o:p></o:p></span></p>
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