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FTP (21)

File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files between a client and server on a computer network.

The standard port is 21.

ftp <ip_address>

To login anonymously, use anonymous as the username while the password leave it empty.

Two modes of FTP connection are:

  • Active: the client opens a port and the server actively connects to it.
  • Passive: the client connects to a port opened by the server.

Login brute force​

It is possible to brute force FTP login with Hydra.

hydra -t 4 -l <USERNAME> -P /usr/share/wordlists/rockyou.txt -vV <HOST> ftp