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Why is open_basedir set to none automatically after applying recommended settings through Performance Booster?

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Daniel Yordanov
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Plesk for Windows DoNotDelete:docref kb: how-to Plesk for Linux

Applicable to:

  • Plesk for Linux
  • Plesk for Windows

Question

  • Why is the open_basedir PHP Setting set to none automatically after applying recommended settings via Plesk > Tools & Settings > Performance Booster? Is there a security risk?
  • Is it expected that applying recommended settings through Performance Booster changes the open_basedir PHP configuration directive to none?

Answer

Disabling restriction for open_basedir increases the website loading speed significantly and according to PHP documentation keeping the restriction active doesn't provide a noticeable security benefit.

The industry standard for most of the largest web hosting companies is to have open_basedir set to none, but disabling undesired PHP functions in order to increase security instead. 

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