500 OOPS Solution

500 OOPS:Vsftpd: refusing to run with writable anonymous root

If we have started the vsFTPd server, but the logon test will show a message similar to the following;

500 OOPS: vsftpd: refusing to run with writable anonymous root

This indicates that the permissions on the home directory of the ftp user are incorrect and should be changed;

 
 

  
  
[root@localhost ~]# more /etc/passwd |grep ftp  
  
  
 
  
  
ftp:x:1000:1000:FTP User:/var/ftp:/sbin/nologin  
  
  
 
 
 

We found that the ftp user's home directory is in/var/ftp, which is caused by incorrect/var/ftp permissions. the permissions of this directory cannot be opened; it is because you have run chmod 777/var/ftp. If you do not have an ftp user's home directory, you must create one by yourself;

The Home Directory of the following FTP users cannot be fully open to all users, user groups, and other user groups;

 
 

  
  
[root@localhost ~]# ls -ld /var/ftp  
  
  
 
  
  
drwxrwxrwx 3 root root 4096 2005-03-23 /var/ftp  
  
  
 
 
 

The following method should be used to correct this error;

 
 

  
  
[root@localhost ~]# chown root:root /var/ftp  
  
  
 
  
  
[root@localhost ~]# chmod 755 /var/ftp  
  
  
 
 
 

Some may say, What should I do if anonymous users are readable, downloadable, and uploadable? This is also simple. You can create a directory under/var/ftp and set the permission to 777. Then you can change vsftpd. conf to OK. There is no difficulty;

For security considerations, vsFTPd does not allow ftp users' home directory permissions to be completely unrestricted. You can read the vsFTPd documentation to understand it; otherwise, it cannot be called the safest FTP server, right?