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<p class="MsoNormal"><span lang="FR-CA">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA"><o:p> </o:p></span></p>
<p class="MsoNormal">I’m trying to figure out how to make the following setup work:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a node on which there’s an application which isn’t proxy aware so basically, the only remaining option would be to use a transparent proxy. But my corporate proxy isn’t a transparent proxy. So I have to build this in two layers.
My solution would be to:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Have a squid proxy on the node’s router host configured as a transparent proxy for both HTTP and HTTPS<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Have this squid proxy configured to talk to the parent host, which would be my corporate proxy<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Have this squid proxy able to decide if a particular flow should go to the corporate proxy or connect “directly” with the destination host<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve been successful at tasks #2 and #3 (well, in fact, I did it with tinyproxy but stopped because of task #1<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve partly succedded at task #1. In fact, it worked for HTTP. I haven’t figured out how to do it for HTTPS. My questions are:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>I do not understand how the client would be able to perform a CONNECT to reach squid in HTTPS. So I’m assuming that there’s some other magic.
<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>The second thing I don’t understand is the certificates management. Let’s say my node tries to reach
<a href="https://www.google.com">https://www.google.com</a> but does not know anything about the proxy. I assume that the client will get the certificate from squid in some way, but would probably expect to receive a certificate from Google. How would that
work?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can someone help me? I’m running out of options…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Christian Tardif<o:p></o:p></p>
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