500 Syntax error, command unrecognized. when I use FileZilla Client to connect the Server

sftp

I installed the FileZilla Server on my Windows Server. and when I use the FileZilla Client to connect it there gets bellow error:

https://filezilla-project.org/
Connecting to server...
Connected, waiting for authentication
Logged on
(000018)2018/10/24 10:56:18 - (not logged in) (50.184.220.141)> Connected, sending welcome message...
(000018)2018/10/24 10:56:18 - (not logged in) (50.184.220.141)> 220-FileZilla Server version 0.9.43 beta
(000018)2018/10/24 10:56:18 - (not logged in) (50.184.220.141)> 220-written by Tim Kosse (tim.kosse@filezilla-project.org)
(000018)2018/10/24 10:56:18 - (not logged in) (50.184.220.141)> 220 Please visit http://sourceforge.net/projects/filezilla/
(000018)2018/10/24 10:56:18 - (not logged in) (50.184.220.141)> SSH-2.0-FileZilla_3.32.0
(000018)2018/10/24 10:56:18 - (not logged in) (50.184.220.141)> 500 Syntax error, command unrecognized.

The FileZilla Server listen on the port 21.

In my Client I use sftp://102.33.56.81, port 21 to connect the Server, but get failed, the Server log is upper.

Best Answer

This is because the FileZilla Server default use FTP protocol, it use the port 21.

when you connect it can not use sftp protocol, just use ftp to connect.

ftp://102.33.56.81
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