The act of trying repeatedly to connect to an
unavailable FTP server with little or no time between connection attempts. It can be compared to repeatedly hitting the "redial" button on a telephone when
dialing a phone number that is busy until the other phone is no longer busy
Most
FTP sites have policies against hammering and require FTP clients to set
retry times at specific intervals, commonly at least 120 seconds between each attempt to connect. Most FTP sites can also monitor for devices that hammer, and once detected the server will ban access to the offending
IP address either permanently or for a limited amount of time.