I was recently helping in the forums regarding the FTP 7.0 publishing service.  Here is the post. http://forums.iis.net/t/1147315.aspx   The FTP 7.0 publishing service is one of the real gems available in IIS 7.0.  It is an ‘out of band’ release to replace the IIS 6 FTP service (actually this service has been around awhile, IIS 3.0 maybe!)  Anyway, there is a lot of great information posted on IIS.net.  I was able reproduce and resolve an 534 TLS error that had been posted.  The thread covers what I did to work around it.  In my research, I found some great articles that cover installation, troubleshooting, how to setup ‘FTP’ host-headered sites.  I listed below three clients I tested that were able to connect to IIS 7.0 while SSL was enabled.  Talk about a straight forward, secure solution!

Windows Firewall setup for Microsoft FTP Publishing Service for IIS 7.0
http://blogs.iis.net/jaroslad/archive/2007/09/29/windows-firewall-setup-for-microsoft-ftp-publishing-service-for-iis-7-0.aspx

Install and Configure Secure FTP on IIS7
http://blog.caneja.com/archive/2007/10/26/install-and-configure-secure-ftp-on-iis7.aspx

Installing and Troubleshooting FTP7
http://www.iis.net/articles/view.aspx/IIS7/Managing-IIS7/Using-FTP-Server-in-IIS7/Installing-and-Troubleshooting-FTP7

Using virtual host names (aka host headers)
http://www.iis.net/articles/view.aspx/IIS7/Managing-IIS7/Using-FTP-Server-in-IIS7/Using-virtual-host-names

FTP clients that support SSL

CoreFTP
www.coreftp.com

SmartFTP
www.smartftp.com

FileZilla
http://filezilla-project.org/

Moveit Freely (ftps command line tool)
http://www.standardnetworks.com/moveitfreely/

Hope this helps,

Steve Schofield
Microsoft MVP – IIS