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Diffstat (limited to 'roles/base')
| -rw-r--r-- | roles/base/vars/main.yml | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/roles/base/vars/main.yml b/roles/base/vars/main.yml index 557a4a7c..d228b088 100644 --- a/roles/base/vars/main.yml +++ b/roles/base/vars/main.yml @@ -43,3 +43,8 @@ sysctl_config: # Prevent against the common 'syn flood attack' net.ipv4.tcp_syncookies: 1 + + # Disable Selective Acknowledgement (SACK) + # Workaround CVE-2019-11477, CVE-2019-11478, CVE-2019-11479 + # See https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md + net.ipv4.tcp_sack: 0 |