Reference GuidesRancher Security GuidesRancher v2.3 Hardening Guides版本：v2.0-v2.4Rancher v2.3.xThe relevant Hardening Guide and Self Assessment guide depends on your Rancher version:Rancher v2.3.5 Hardening GuideRancher v2.3.5 Self Assessment GuideRancher v2.3.3 Hardening GuideRancher v2.3.3 Self Assessment GuideRancher v2.3.0 Hardening GuideRancher v2.3.0 Self Assessment Guide