z/OS Communications Server: IP User's Guide and Commands
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CCc subcommand—Turn off integrity protection

z/OS Communications Server: IP User's Guide and Commands
SC27-3662-00

Purpose

Use the CCc subcommand to turn off integrity protection on the control connection. This command must be integrity-protected, and must be preceded by a successful security mechanism negotiation.

Format

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>>-CCc---------------------------------------------------------><

Parameters

There are no parameters for this subcommand.

Rule: Because turning off integrity protection potentially enables an attacker to insert commands onto the control connection, some FTP servers might refuse to honor this command.
Restrictions: When the security mechanism is TLS, the following restrictions apply:
  • The CCc subcommand is not supported when the connection is implicitly secured with a connection to the port that is configured with the TLSPORT statement.
  • The CCc subcommand is supported only when the TLSRFCLEVEL is RFC4217 or CCCNONOTIFY.
Parent topic: FTP subcommands

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