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Block Port Overflow
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.
Table 77: Block Port Overflow
In this field...
Do this...
Action
Specify what action to take for PORT commands containing a number
greater than 255, by selecting one of the following:
Block. Block the PORT command. This is the default.
None. No action.
Blocked FTP Commands
Some seldom-used FTP commands may compromise FTP server security and integrity. You can specify
which FTP commands should be allowed to pass through the security server, and which should be blocked.
To enable FTP command blocking
In the Action drop-down list, select Block.
Chapter 13: Using SmartDefense
SmartDefense Categories
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Troubleshooting
