Apache2 and the proxy_pass to ssl based websites

Everybody knows this:


ProxyPass / http://domain.tld/
ProxyPassReverse / http://domain.tld/
ProxyPreserveHost on


But what will you do if you have a https based backend?

Some of you will try this:


ProxyPass / https://domain.tld/
ProxyPassReverse / https://domain.tld/
ProxyPreserveHost on


After an apache2 restart you will find this in your logfiles when you request the url.

[Mon Jul 29 13:14:22 2013] [warn] proxy: No protocol handler was valid for the URL /.
If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.

The point is, you have to enable the ssl module for your apache2.

After that you can:


SSLProxyEngine On

ProxyPass / https://domain.tld/
ProxyPassReverse / https://domain.tld/
ProxyPreserveHost on


Reload your Apache2 and be happy.

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