File Transfer Protocol, or FTP, is a network protocol made for transferring files in a client and host fashion over a Transmission Control Protocol (TCP) network, such as the internet. FTP is integrated into most browsers, and you have probably used it before. It is a common way to host files and transfer them easily. To access an FTP, a login is required, unless the server is configured to use anonymous logins (like the Arch Linux mirrors).
In a home environment, having an FTP server can be a really cool thing. FTP is an easy way to host and share files between all of your computers, and even access your home FTP files when using Wi-Fi away from home. Beware, as FTP is an insecure protocol. A secure alternative is SFTP (SSH File Transfer Protocol).
Today in Null Byte, we are going to set up an FTP server daemon on our systems. This will allow us to:
- Share files over the internet.
- Share files outside of a Virtual Machine.
- Escape a chroot.
- Host your own file repository that can be modified by other users over the internet.
- Root privileges
- Router administrator privileges
- A router capable of port forwarding
- Some files to share
Step 1 Download & Install the Daemon
Text in bold is a command that must be entered in a terminal emulator.
First, we have to install the FTP daemon of our choice. A daemon is just a program or service that runs in the background processes. I use vsftpd (very secure FTP daemon) for my FTP server. It is light on system resources, secure, small in size, and easy to configure.
- Download the vsftpd source from the official website.
- Change to your Downloads directory.
- Configure the installation for your system.
- Compile and install vsftpd.
make && sudo make install
Step 2 Move Files to the FTP Server
- Let's move our music to FTP for the example.
sudo cp -R ~/music/* /srv/ftp/
Step 3 Configure & Start the Daemon
- Configure the daemon to not allow anonymous logging.
From =YES to =NO.
- Depending on your distro, starting services is a different command. For Ubuntu, it is service. Arch uses rc.d.
sudo rc.d start vsftpd
Step 4 Access the FTP Remotely on a Browser
Let's access our FTP from somewhere outside our network.
- Enable port forwarding for port 21.
- Go to whatismyip and write down your external IP address.
- Open up an internet browser on a computer from outside of the network and type the following into the address bar.
You can also use wget.
- Browse your music folder!