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    Securing Connections Between a C Series Controller and Remote Hosts

    For security reasons, take care to limit the number of open ports you configure for applications and SRC components on the external interfaces.

    By default, SSH for nonroot users is enabled on C Series Controllers. Otherwise, you configure the C Series Controller to explicitly allow users on remote systems to access it. Table 1 lists the applications through which remote users can access a C Series Controller.

    You can also configure security certificates for use by HTTPS connections.

    You can connect from a C Series Controller to remote hosts through:

    • SSH
    • Telnet
    • FTP by means of a file URL

    Modified: 2016-12-29