File Transfer Protocol (FTP)ΒΆ

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FTP or File Transfer Protocol is TCP based service. We use FTP to upload or download their files to server. By default FTP use 2 ports, which is port 20 and 21. Port 21 for “command port” and port 20 for “data port”.

In this documentation we use Ubuntu 14.04 as operating system, and vsftpd as ftp server.

  • root access
sudo su
  • Re-synchronize the package index files from sources
apt-get update
  • Install vsftpd
apt-get install vsftpd
  • Add user id & password to access ftp
adduser cnc
_images/adduser.png
  • Edit configuration file
nano /etc/vsftpd.conf
_images/vsftpd.png
  • Find these parameters and set them to :
anonymous_enable=NO

local_enable=YES

write_enable=YES

chroot_local_user=YES
  • Changing ownership root for cnc directory
sudo chown root:root /home/cnc
  • Creating directory for ftp files
sudo mkdir /home/cnc/ftp
  • Granting access to user cnc that we created before to access ftp directory
sudo chown cnc:cnc /home/cnc/ftp
  • For a test, create a txt file named 1.txt inside /ftp directory, and write as you like, mine was “This is just a test!”
nano /home/cnc/ftp/1.txt
_images/text.png
  • Now you can access your ftp server by opening your web browser and type ftp:// (your ftp server ip)
_images/result.png

Note

Login using username and password that we set before

Sources :