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KB Article #165747

The FTP command "CCC"

Problem

-- Is the FTP command CCC (Clear Command Channel) supported by Gateway and Secure Relay?

Resolution

* The FTP command "CCC" (defined in RFC 2228) is not currently supported in Gateway nor Secure Relay, either as a responder (server) or initiator (client). You will therefore need to make sure that the appropriate ports (for the data connection) are open on your firewall.