Question : FTP Error 503 bad sequence of commands

Hello,

we have a scanning over ftp problem, im using filezilla server and using a pc on the network i can ftp fine to the server no problems at all, but we have a scanner that send scans via ftp and on the filezilla interface we get error bad sequence of commands, can anyone explain what could be happening?

output below

Thanks

Code Snippet:

1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: 21: 22: 23: 24: 25: 26:

000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> Connected, sending welcome message... (000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 220-FileZilla Server version 0.9.31 beta (000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 220-written by Tim Kosse ([email protected]) (000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 220 Please visit http://sourceforge.net/projects/filezilla/ (000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> USER anonymous (000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 331 Password required for anonymous (000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> PASS (000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> 230 Logged on (000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> QUIT (000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> 221 Goodbye (000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> disconnected. (000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> Connected, sending welcome message... (000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 220-FileZilla Server version 0.9.31 beta (000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 220-written by Tim Kosse ([email protected]) (000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 220 Please visit http://sourceforge.net/projects/filezilla/ (000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> USER anonymous (000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 331 Password required for anonymous (000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> PASS (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 230 Logged on (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> NLST 09061810050_1.jpg (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 503 Bad sequence of commands. (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> TYPE I (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 200 Type set to I (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> QUIT (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 221 Goodbye (000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> disconnected.

Open in New Window Select All

Answer : FTP Error 503 bad sequence of commands

The NList command (NLST 09061810050_1.jpg) requires an open data connection. The client requests such a data connection using the PASV directive.

In the server connection information, try enabling Passive mode.