In addition, by overwriting the PORT command with its own internal address, the firewall overwrites the FTP- server built-in protection mechanism that protects against this type of attack.
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另外,通過(guò)使用它自己的內部地址覆蓋 PORT 命令,防火墻會(huì )覆蓋 FTP 服務(wù)器內置的用來(lái)保護不受這種類(lèi)型攻擊的保護機制。