關於「FTPS port forwarding」標籤，搜尋引擎有相關的訊息討論：

What firewall ports do I need to open when using FTPS? - Server Faultserverfault.com › questions › what-firewall-ports-do-i-nee...Why FTP server needs to set up port forwarding and http server does ...superuser.com › questions › why-ftp-server-needs-to-set-u...ASA 5515-X - port