I am running IIS 8.5 on Windows 2012 R2.
I created an FTP site to use port 8021 and when trying to connect using FileZilla (plain FTP), I get the error message "Connection timed out after 20 seconds of inactivity. Failed to retrieve directory listing". I am using Active mode in FileZilla, but in FileZilla connection window it shows that it automatically switches to Passive mode. Any idea why? Do I have to configure anything in IIS to not use Passive mode?
14:19:39 Status: Connecting to ip:8021...
14:19:40 Status: Connection established, waiting for welcome message...
14:19:41 Status: Logged in
14:19:41 Status: Retrieving directory listing...
14:20:02 Command: PWD
14:20:02 Response: 257 "/" is current directory.
14:20:02 Command: TYPE I
14:20:02 Response: 200 Type set to I.
14:20:02 Command: PORT 10,0,1,16,5,64
14:20:02 Response: 501 Server cannot accept argument.
14:20:02 Command: PASV
14:20:02 Response: 227 Entering Passive Mode (ip,250,68).
14:20:02 Command: LIST
14:20:02 Response: 150 Opening BINARY mode data connection.
14:20:02 Error: Connection timed out after 20 seconds of inactivity
14:20:02 Error: Failed to retrieve directory listing
Thanks in advance.
Update: Tried Passive mode and still no luck,
09:27:20 Status: Connecting to ip:8021...
09:27:21 Status: Connection established, waiting for welcome message...
09:27:22 Status: Logged in
09:27:22 Status: Retrieving directory listing...
09:27:42 Command: PWD
09:27:42 Response: 257 "/" is current directory.
09:27:42 Command: TYPE I
09:27:42 Response: 200 Type set to I.
09:27:42 Command: PASV
09:27:42 Response: 227 Entering Passive Mode (ip,193,17).
09:27:42 Command: LIST
09:27:42 Response: 150 Opening BINARY mode data connection.
09:27:42 Error: Connection timed out after 20 seconds of inactivity
09:27:42 Error: Failed to retrieve directory listing
Update: Solved! https://www.iis.net/learn/publish/using-the-ftp-service/configuring-ftp-firewall-settings-in-iis-7
Added port range to IIS FTP Firewall Support for server node and opened port range in external firewall to allow Passive Mode. Thanks Martin for pointing out