Man pages matching name poe::filter::ssl::prefilter in section 3pm:

POE::Filter::SSL::PreFilter.3pm.en	debian 10 / libpoe-filter-ssl-perl
POE::Filter::SSL::PreFilter.3pm.en	debian 11 / libpoe-filter-ssl-perl
POE::Filter::SSL::PreFilter.3pm.en	debian 12 / libpoe-filter-ssl-perl