PFSense 503 – Service Not Available

Recently I attempted to log into a nanobsd pfsense 2.2.3 firewall webGUI. Was not having any issues with the firewall other than not being able to access the webGUI.

503 – Service Not Available


  1. SSH into the box:
    2015-07-31 10_59_17
  2. Run option 16 ‘restart PHP-FPM’

On top of the webGUI not displaying I was noticing some delays when saving. The delay wasn’t browsing pages or ‘applying’ settings, strictly when I was saving settings it would take 15-40 seconds to load1)

Run the following command to re-mount the filesystem2)
To remount file systems as read-write, run:

To mount as read-only again, run:

To make the above settings stick (once in the web GUI) you can navigate to “Diagnostics>NanoBSD>Media Read/Write Status” and tick the ‘keep media mounted read/write at all times”3)


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2 thoughts on “PFSense 503 – Service Not Available”

  1. Dude, I’ve been fighting this error for such a long time. After numerous reinstalls, the error would always pop back up. Thanks for the tip– it worked like a champ!

  2. Glad I could help. I’ve amended the post to include the steps to take to keep the media mounted.

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