Basic htaccess

The .htaccess file tells the web servers how to act when your website’s needs differ from the default behavior.  Some examples include:


Redirect all traffic to a new domain / URL / etc.

  RewriteEngine on
  RewriteRule ^/?(.*)$ %{REQUEST_SCHEME}://$1 [L,NE,QSA,R=301]


Prevent a web application’s catch-all script from intercepting and breaking Shibboleth logins:

  RewriteEngine On
  RewriteCond %{REQUEST_URI} ^/Shibboleth.sso($|/)
  RewriteRule . - [L]


Re-enable Apache’s directory listing feature:

  Options +Indexes


Redirect any request for a non-existent page an alternate catch-all location:

  RewriteEngine On
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule . /pagenotfound.php [L,R=301,QSA,NE]


Block access to files in a directory if they’re being called directly or from a site other than yours: (useful for js, css, or image directories)

  SetEnvIfNoCase Referer "mysite\.osu\.edu" ok_ref
  <Files "*">
     Order deny,allow
     Deny from all
     Allow from env=ok_ref


Disable all browser-side caching:

  Header unset ETag
  Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
  Header set Pragma "no-cache"
  Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"


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