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FTP clients send PORT commands when connecting to the FTP sever. A PORT command consists of a series of numbers between 0 and 255, separated by commas.
To enforce compliance to the FTP standard and prevent potential attacks against the FTP server, you can block PORT commands that contain a number greater than 255.
Block Port Overflow
In this field… |
Do this… |
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Action |
Specify what action to take for PORT commands containing a number greater than 255, by selecting one of the following:
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