Hi,
I have ported a version of the old IPCop addon 'Banish' to IPFire and use it to maintain my local blacklist. Banish was one of my favorite IPCop addons but it ceased to be maintained about 10 years ago and for later versions of IPCop I installed a locally written text version of Banish to maintain the Blacklist.
This new IPFire version restores all the original GUI functionality and is currently running on an PC Engines ‐ apu2 with IPFire 2.21 (i586) - Core Update 125.
If you would like to try this addon, I have uploaded it to https://github.com/Grantura/Banish-IPFire grab the self installing file banish-ipfire.tar-1.0.1.gz and extract it to /tmp.
The install also contains an uninstall script should you want to back out at any time.
Regards
Rob Brewer