


When setting user permissions of FTP servers on Linux systems, vsftpd (Very Secure FTP Daemon) is usually used, which is commonly used FTP server software. Here are the basic steps to set user permissions:
1. Install vsftpd
First, confirm whether vsftpd is installed on the system. If not installed, you can install it through the following command:
<code>sudo apt-get update sudo apt-get install vsftpd</code>
2. Configure vsftpd
Edit vsftpd's configuration file /etc/vsftpd.conf:
<code>sudo nano /etc/vsftpd.conf</code>
In the configuration file, you can set a variety of options to control user permissions. Here are some common configuration items:
- local_enable=YES: Allow local users to log in.
- write_enable=YES: Allow local users to upload files.
- chroot_local_user=YES: Limit local users to their home directory.
- allow_writeable_chroot=YES: Allows the chroot directory to be writable.
- userlist_enable=YES: Enable user list.
- userlist_file=/etc/vsftpd.userlist: Specify the user list file.
- userlist_deny=NO: Allows users in the user list to log in.
3. Create an FTP user
Create a new FTP user and set its home directory and permissions:
<code>sudo adduser ftpuser sudo passwd ftpuser</code>
Follow the prompts to set the password.
4. Set user home directory permissions
Make sure the home directory permissions of the FTP user are set correctly:
<code>sudo chown ftpuser:ftpuser /home/ftpuser sudo chmod 755 /home/ftpuser</code>
5. Configure user list (optional)
If you enable user list, you can add users that are allowed to log in to the /etc/vsftpd.userlist file:
<code>sudo nano /etc/vsftpd.userlist</code>
Add usernames to the file, one per line.
6. Restart the vsftpd service
Save the configuration file and restart the vsftpd service to apply the changes:
<code>sudo systemctl restart vsftpd</code>
7. Test FTP connection
Use the FTP client to connect to your server and test whether the user permissions are set correctly.
<code>ftp your_server_ip</code>
Enter your username and password to log in and check whether you can upload, download and browse files.
Things to note
- Make sure the firewall allows FTP traffic (usually port 21).
- If you need more advanced security settings, consider encrypting FTP connections with SSL/TLS.
Through the above steps, you should be able to successfully set user permissions of the FTP server on your Linux system.
The above is the detailed content of How to set user permissions on Linux FTP Server. For more information, please follow other related articles on the PHP Chinese website!

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