How to prevent VSFTP user to change folder/file permission/ownership?

Solution Verified - Updated -

Issue

  • The FTP user is using FileZilla client to change the file mode permissions, How we can prevent it ?
  • In /var/log/vsftpd.log we can see that FTP user changed the file permission as per log below:
Mon Aug 11 15:33:05 2014 [pid 14350] [ftp.user1] FTP command: Client "x.x.x.x", "SITE CHMOD 777 tst.tst.txt"
Mon Aug 11 15:33:05 2014 [pid 14350] [ftp.user1] OK CHMOD: Client "x.x.x.x", "/tst.tst.txt 777"
Mon Aug 11 15:33:05 2014 [pid 14350] [ftp.user1] FTP response: Client "x.x.x.x", "200 SITE CHMOD command ok."

Environment

  • Red Hat Enterprise Linux 6
  • vsftp

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