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We have an Apache 2.4 server that runs numerous virtual hosts, some of which use http and some of which use https. I would like to send the same HSTS (Strict-Transport-Security) header only in those virtual hosts that use https.

I realize I could add the Header command individually to each virtual hosts, but I would rather set it once in the Apache global config section. Is it possible to set it in the global config so that only the https virtual hosts send it?

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You can try to use a if expression.

http://httpd.apache.org/docs/2.4/mod/core.html#if

http://httpd.apache.org/docs/2.4/expr.html

For example, untested

# Check a HTTP header for a list of values <If "%{HTTPS} == 'on' && %{HTTP_HOST} == 'ssl.example.com'"> Header set HSTS ... </If>

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