B is correct!
Only anonymous users for uploading need in this case Write and Execution options which are w+e=2+1=3 that means Anonymous users can not see the content of the directory but have permission to access the directory (executive permission 1) as well as write (write permission 2) -> just uploading
To allow anonymous users to upload, it is recommended that a write-only directory be created within /var/ftp/pub/.
To do this, type:
mkdir /var/ftp/pub/upload
Next change the permissions so that anonymous users cannot see what is within the directory by typing:
chmod 730 /var/ftp/pub/upload
A long format listing of the directory should look like this:
drwx-wx— 2 root ftp 4096 Feb 13 20:05 upload
Additionally, under vsftpd, add the following line to the /etc/vsftpd/vsftpd.conf file:
anon_upload_enable=YES
Because FTP passes unencrypted usernames and passwords over insecure networks for authentication, it is a good idea to deny system users access to the server from their user accounts.
To disable user accounts in vsftpd, add the following directive to /etc/vsftpd/vsftpd.conf:
local_enable=NO
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Armina
6 months, 3 weeks ago