I'm always surprised to see people still suggesting phpBB
. I thought it was fairly common knowledge by now that it is or has been riddled with security flaws
. In addition, it's certainly not as streamlined as other forum software.
If Refracta, or Devuan for that matter, convert to a different forum, I recommend FluxBB
. I've administered is in the past and it very fast. I'm not particularly fond of PHP in general but FluxBB lovely piece of kit.