Man pages matching name ftpshut in section 8:

ftpshut.8.ja	debian 10 / manpages-ja
ftpshut.8.en	debian 10 / proftpd-basic
ftpshut.8.ja	debian 11 / manpages-ja
ftpshut.8.en	debian 11 / proftpd-core
ftpshut.8.ja	debian 12 / manpages-ja
ftpshut.8.en	debian 12 / proftpd-core