Fireperf can be seen on the following pages (wiki and man-pages)
https://man-pages.ipfire.org/fireperf/fireperf.html
and can be installed via Pakfire
but it is not visible on the following page:
Is fireperf no longer useful?
Should iperf/iperf3 be used instead of fireperf ?
Regards
fireperf has been added into the addons Network tools list.
The page existed but for some reason was not in the addons list or was accidentally removed. Maybe I accidentally removed it when I placed all the addons into alphabetical order.
I have added it in to the addons wiki page.