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.

Error:

503 – Service Not Available

Resolution:

SSH into the box:

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 load .

Run the following command to re-mount the filesystem :

To remount file systems as read-write, run:

/etc/rc.conf_mount_rw 1 / etc / rc . conf_mount_rw

To mount as read-only again, run:

/etc/rc.conf_mount_ro 1 / etc / rc . conf_mount_ro

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” .