User-mode virtual account passwords are not the real present in the system, so long as the proper configuration of the virtual user mode than the local user mode safer
First, you need to have vsftpd service can be downloaded yum go in (of course you need to have a local yum repository)
Enter the command: yum install vsftpd
After the download is complete open the vsftpd service
Enter the command: systemctl start vsftpd
First, download the service yum install vsftpd -y
Step 1: Create a virtual FTP user database file.
Vsftpd switch to the program directory, then modify this file will be written into the user name and password
Enter the command: cd / etc / vsftpd /
FTP user to create a database used to generate the original account and password files :
Enter vim vuser.list (singular behavior accounts, double the number of acts password) to create three virtual friends Users
Use db_load command generated FTP user database file vuser.db with HASH algorithm:
输入： db_load -T -t hash -f vuser.list vuser.db
View database file types: file vuser.db
FTP user database content is very sensitive, so permission to smaller: chmod 600 vuser.db
Delete the original account and password file: rm -f vuser.list
Step 2: Create a system user FTP root directory and virtual user mapping.
Create a virtual user and set to not allow landing system and define the user's home directory: useradd -d / var / ftproot -s / sbin / nologin virtual
View the user's home directory permissions: ls -ld / var / ftproot /
To ensure that other users can access, giving rwxr-xr-x permissions: chmod -Rf 755 / var / ftproot /
Step 3: Create a virtual user support PAM authentication file: vim /etc/pam.d/vsftpd.vu
// db parameter is used to point just generated vuser.db file, but do not write the suffix.
auth required pam_userdb.so db=/etc/vsftpd/vuser
account required pam_userdb.so db=/etc/vsftpd/vuser
Step 4: Add support vsftpd.conf configuration file.
As to the use of virtual user mode , and virtual user mode are far better than anonymous access mode is more secure, but also closed configuration anonymous open mode . The following input parameters are changed: vim /etc/vsftpd/vsftpd.conf
Step 5: Set different permissions for virtual users
If you want users to be able to fully manage the information in the FTP, FTP program supports they need to be independent of the user rights profiles
Let's look at the configuration file (file no words to add, modify some words)
Enter the command: vim /etc/vsftpd/vsftpd.conf
Create a separate user rights profiles stored in the directory: mkdir / etc / vsftpd / vusers_dir /
Switching into the directory: cd / etc / vsftpd / vusers_dir /
Create a blank linuxuser1 configuration file: touch linuxuser1
Specific authority designated linuxuser1 users: enter the command: vi linuxuser1
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
Next we restart the service: systemctl restart vsftpd
Into the second virtual machine (the client) enter ftp + ip
Enter your user name and password before good design
Of course we also have permission to create folder
Of course, we can also operate in the windows (user-mode virtual access ftp)
It is also set to enter their user name and password (this file is just in a virtual machine construction)
This is a virtual user we'll set up a server (because we set the three at the top) Repeat the above process
Go to the local machine, search ftp: // ip
That file is displayed
