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The SSCN command is an SSL/FTP Security Extension (RFC 2228) command used to specify the size of the protected buffer on an SSL connection. The SSCN command allows the client to tell the server to use a secured connection when transferring files directly between servers via FXP. Using the SSCN command before a PASV transfer specifies how the server should negotiate a secure connection with secure credentials.




200 - The command was successful.

421 - The server is offline or is going offline.

501 - Syntax error in parameters or arguments. This usually results from an invalid or missing file name (<name>), invalid port information, or parameters added to the end of the command. This command does not take any parameters. It can also be sent back if the IP address is banned/disallowed from connecting to the server.