3.4.1 Ensure DCCP is disabled - blacklist dccp

Information

The Datagram Congestion Control Protocol (DCCP) is a transport layer protocol that supports streaming media and telephony. DCCP provides a way to gain access to congestion control, without having to do it at the application layer, but does not provide in-sequence delivery.

Rationale:

If the protocol is not required, it is recommended that the drivers not be installed to reduce the potential attack surface.

Solution

Edit or create a file in the /etc/modprobe.d/ directory ending in .conf
Example: vim /etc/modprobe.d/dccp.conf
Add the following line:

install dccp /bin/true

See Also

https://workbench.cisecurity.org/files/3636

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-3, CCI|CCI-001958, CSCv6|9.1, CSCv7|9.2, Rule-ID|SV-204450r603261_rule, STIG-ID|RHEL-07-020101

Plugin: Unix

Control ID: 6973d421026b91d85e77794819bb3bbc899d7b165c4825f902cab7fba5bae68e