{"id":"security-groups-stateful-nacls-stateless","text":"Security groups are stateful (return traffic automatically allowed) while Network ACLs are stateless (return traffic must be explicitly allowed by rules).","truth_value":"IN","source":"entries/2026/03/08/vpc-security-groups.md","source_url":"","source_hash":"13933c4c65c21983","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"security-groups-stateful-nacls-stateless","truth_value":"IN","reason":"premise"}]}}