Troubleshooting: 1. The Firewall doesn't block the port 21 and we can telnet
it from the Internet.
2. We can logon the FTP using FTP command.
3. The issue seems to be Passive mode problem. To fix it, Open IP and
navigate to Tools>Options> Advanced.
4. Uncheck the “Use Passive FTP (for firewall and DSL modem…).
2.Check the “Enable FTP folder view (outside of Internet Explorer”.