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22 lines
918 B
HTML
22 lines
918 B
HTML
When mitmproxy receives a connection destined for an SSL-protected service, it
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freezes the connection before reading its request data, and makes a connection
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to the upstream server to "sniff" the contents of its SSL certificate. The
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information gained - the __Common Name__ and __Subject Alternative Names__ - is
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then used to generate the interception certificate, which is sent to the client
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so the connection can continue.
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This rather intricate little dance lets us seamlessly generate correct
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certificates even if the client has specifed only an IP address rather than the
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hostname. It also means that we don't need to sniff additional data to generate
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certs in transparent mode.
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Upstream cert sniffing is on by default, and can optionally be turned off.
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<table class="table">
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<tbody>
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<tr>
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<th width="20%">command-line</th> <td>--no-upstream-cert</td>
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</tr>
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</tbody>
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</table>
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