Example of free FTP server:
ftp.gnu.org
ftp.pureftpd.org
ftp.vim.org
ftp.slackware.com
So, putting it together, "miyama enseki shoujo chitai gashuu 5 2021" could potentially refer to a collection (gashū) of artworks or a compilation (possibly the fifth one, indicated by "5") related to girls (shoujo) from a group or team (chitai) associated with Miyama and something referred to by "enseki," published or created in 2021. Without more context, it's difficult to provide a precise translation or explanation.
Miyama Enseki Shoujo Chitai Gashuu 5 2021 is an event not to be missed for several reasons:
Miyama Enseki (深山燕石) artstyle (CG Collection, etc) [Pony]
Themes and motifs
art book