| Dmitry Teselkin | ee7b811 | 2018-08-22 12:46:08 +0300 | [diff] [blame] | 1 | # 3.5.2 Ensure DCCP is disabled |
| 2 | # |
| 3 | # Description |
| 4 | # =========== |
| 5 | # The Datagram Congestion Control Protocol (DCCP) is a transport layer protocol |
| 6 | # that supports streaming media and telephony. DCCP provides a way to gain |
| 7 | # access to congestion control, without having to do it at the application |
| 8 | # layer, but does not provide in-sequence delivery. |
| 9 | # |
| 10 | # Rationale |
| 11 | # ========= |
| 12 | # If the protocol is not required, it is recommended that the drivers not be |
| 13 | # installed to reduce the potential attack surface. |
| 14 | # |
| 15 | # Audit |
| 16 | # ===== |
| 17 | # Run the following commands and verify the output is as indicated: |
| 18 | # |
| 19 | # # modprobe -n -v dccp |
| 20 | # install /bin/true |
| 21 | # # lsmod | grep dccp |
| 22 | # <No output> |
| 23 | # |
| 24 | # Remediation |
| 25 | # =========== |
| 26 | # Edit or create the file /etc/modprobe.d/CIS.conf and add the following line: |
| 27 | # |
| 28 | # install dccp /bin/true |
| 29 | # |
| 30 | parameters: |
| 31 | linux: |
| 32 | system: |
| 33 | kernel: |
| 34 | module: |
| 35 | dccp: |
| 36 | install: |
| 37 | command: /bin/true |
| 38 | |