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Diffstat (limited to 'mitmproxy/docs/features/upstreamcerts.rst')
| -rw-r--r-- | mitmproxy/docs/features/upstreamcerts.rst | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/mitmproxy/docs/features/upstreamcerts.rst b/mitmproxy/docs/features/upstreamcerts.rst new file mode 100644 index 00000000..af2e2226 --- /dev/null +++ b/mitmproxy/docs/features/upstreamcerts.rst @@ -0,0 +1,23 @@ +.. _upstreamcerts: + +Upstream Certificates +===================== + +When mitmproxy receives a connection destined for an SSL-protected service, it +freezes the connection before reading its request data, and makes a connection +to the upstream server to "sniff" the contents of its SSL certificate. The +information gained - the **Common Name** and **Subject Alternative Names** - is +then used to generate the interception certificate, which is sent to the client +so the connection can continue. + +This rather intricate little dance lets us seamlessly generate correct +certificates even if the client has specified only an IP address rather than the +hostname. It also means that we don't need to sniff additional data to generate +certs in transparent mode. + +Upstream cert sniffing is on by default, and can optionally be turned off. + +================== ============================= +command-line :option:`--no-upstream-cert` +mitmproxy shortcut :kbd:`o` then :kbd:`U` +================== ============================= |