FYI, the unofficial ipblocklist addon that Tim FitzGeorge created in the past is being integrated into IPFire as a core program. I am not sure exactly which CU it will come out in but I would expect 168 or 169.
https://community.ipfire.org/t/can-i-help-progress-version2-of-ipblacklist-addon/6998
and after that thread a patch was submitted into the dev mailing list and has been worked on and is out for testing currently.
https://lists.ipfire.org/pipermail/development/2022-April/013123.html