How to set up and configure an FTP server in Linux

How to set up and configure an FTP server in Linux?
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FTP (file transfer protocol) is an internet protocol that is used for transferring files between client and server over the internet or a computer network. It is similar to other internet protocols like SMTP which is used for emails and HTTP which is used for websites.

Step 1: Install FTP server
$ sudo apt install vsftpd

Step 2: Start the FTP server
$ sudo systemctl enable vsftpd
$ sudo service start vsftpd
$ sudo systemctl enable --now vsftpd

Step 2: Configure Firewall
$ sudo ufw allow 20/tcp
$ sudo ufw allow 21/tcp
$ sudo ufw allow 990/tcp
$ sudo ufw allow 5000:10000/tcp

Step 3: Create ftpuser
$ sudo adduser ftpuser

Step 4: Configure user
$ sudo nano /etc/ssh/sshd_config
...
DenyUsers ftpuser
...

Step 5: Restart sshd
$ sudo systemctl restart sshd
$ sudo mkdir /ftp
$ sudo chown adminuser /ftp

Step 6: Edit config file
$ sudo nano /etc/vsftpd.conf
...
anonymous_enable=NO
local_enable=YES
write_enable=YES
pasv_min_port=5000
pasv_max_port=10000
local_root=/ftp
chroot_local_user=YES
chroot_list_enable=YES
chroot_list_file=/etc/vsftpd.chroot_list
allow_writeable_chroot=YES
local_umask=0002
...
Step 7: Now, we need to create that list file
$ sudo touch /etc/vsftpd.chroot_list
$ sudo nano /etc/vsftpd.chroot_list

Step 8: Restart our vsftpd server
$ sudo systemctl restart --now vsftpd
$ sudo systemctl restart --now vsftpd

Most used FTP server commands
🔴 connect $ ftp -p 21 192.168.***
🔴 get filename-  download the specified file
🔴 put filename-  uploads the specified file
🔴 pwd-  print the current working directory
🔴 cwd-  change working directory
🔴 dele-  delete the specified file
🔴 cdup-  change to the parent directory
🔴 help-  displays help information
🔴 cd-  change the working directory
🔴 bye-  end FTP session

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