User guide

SmartDefense Categories
Chapter 11: Using SmartDefense 233
FTP Bounce
When connecting to an FTP server, the client sends a PORT command specifying the IP
address and port to which the FTP server should connect and send data. An FTP Bounce
attack is when an attacker sends a PORT command specifying the IP address of a third
party instead of the attacker's own IP address. The FTP server then sends data to the victim
machine.
You can configure how FTP bounce attacks should be handled.
Table 57: FTP Bounce Fields
In this field… Do this…
Action Specify what action to take when an FTP Bounce attack occurs, by selecting
one of the following:
• Block. Block the attack. This is the default.
• None. No action.
Track Specify whether to log FTP Bounce attacks, by selecting one of the
following:
• Log. Log the attack. This is the default.
• None. Do not log the attack.