As of August 2011, we replaced our FTP service with FTP over SSL. 

Some things to note:

• This is NOT SFTP. This is using FTP with an SSL/TLS connection.
• Only use versions of Filezilla 3.7.4.1 or older.
• All research indicates that Frontpage does not support an SSL/TLS connection at this time.
• Dreamweaver's newest version does support FTP over SSL/TLS.

If using FileZilla:

1. Go to File > Site Manager
2. On the left side of the screen, click on the FTP account you want to edit.
3. On the right side, change the Encryption to Require explicit FTP over TLS and click OK.
4. Also ensure that your Protocol is FTP and the Logon Type is set to Normal.
5. Test your connection and when you see the Unknown certificate screen, check the Always trust this certificate in future sessions.
6. You're Done.

*note the screenshots are just sample login credentials. Your server credentials will be found under Account > FTP
 

If using Ipswitch WS_FTP Professional:

1. Find the site you want to edit from the list of connections, highlight it and click Edit.
2. Click the Advanced option on the left.
3. Under the Server Type, choose the FTP/SSL (AUTH SSL) option and click OK.
4. Test your connection and when you see the "Non-Trusted Certificate" popup window, choose Trust this certificate and click OK.
5. You're Done.