Windows SBS 2011 FTP is accessible form inside the domain after I reset the FTP Connect As password after 2 years of non-use. When I try to access the FTP from outside the domain I cannot get in. On a Windows 10 PC with IE 11 I get prompted for the user logon repeatedly while displaying this page cannot be displayed. On a Windows 7 PC with IE 11 it just gives me the message that this page cannot be displayed.
The FTP logs don't say a lot but claim that outside in coming in Anonymously. I have Anonymous disabled in IIS.