<div dir="ltr">Hi,<div>I am running into a strange issue and would appreciate any help in debugging what could be going wrong.</div><div><br></div><div>I am using self-signed certs for both my client and server. Client sends its cert to server (via out of band channel) and vice-versa so that verification can be done. </div><div><br></div><div>I am using the same subject DN for both my client and server (again, as bad as this is, this works for our setup).</div><div><br></div><div>All is good and IPsec comes up. Now I am simulating failure scenario where the server dies and restarts after say 40 seconds and expect IPsec to come up again because client is programmed to retry every 30 seconds. [BTW, the client here is detecting the server is down by checking output of setkey -D to see if mature bi-directional IPsec SAs are present or not]</div><div><br></div><div>Client logic on detecting IPsec down for 30 seconds (Start state is IPsec transport tunnel established):</div><div>========================================</div><div>1) Call ipsec stop</div><div>2) Receive out of band event that server is up, connect to server</div><div>3) Regenerate private key and store in ipsec.d/private/</div><div>4) Regenerate self-signed cert and store in ipsec.d/certs/client.cert</div><div>3) Get server's self-signed cert and store in local ipsec.d/certs/server.cert. Send client's self-signed cert to server</div><div>4) ipsec start to bring tunnel up</div><div><br></div><div>Server events (Start state is IPsec transport tunnel established):</div><div>===========</div><div>1) Server is shut down resulting in ipsec daemon stopping</div><div>2) After 40 seconds, server restarts</div><div>3) Generate private key and store in ipsec.d/private/</div><div>4) Generate self-signed cert and store in ipsec.d/certs/server.cert</div><div>5) Receives out of band event that client is trying to register<br clear="all"><div>6) Send own cert to client and store client's cert in ipsec.d/certs/client.cert</div><div>7) ipsec start to bring tunnel up</div><div>7.1) Each subsequent client re-attempt (30 seconds), will lead to "ipsec reload" and not "ipsec stop/start" cycle on server end.</div><div><br></div><div>At this point the server logs complain the following:</div><div><div><b>07[CFG] selected peer config 'x.x.x.x'</b></div><div><b>07[CFG] using trusted certificate "ABCDEFGH"</b></div><div><b>07[IKE] signature validation failed, looking for another key</b></div></div><div><br></div><div>Appreciate any guidance. </div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><span style="font-size:12.8px">Piyush Agarwal</span><br></div><div><span style="color:rgb(17,17,17)"><font face="arial, helvetica, sans-serif" size="2">Life can only be understood backwards; but it must be lived forwards.</font></span><br></div></div></div></div></div></div></div></div></div></div></div></div></div>
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