{"id":"security-groups-only-allow-rules-no-deny","text":"Security groups support only allow rules (no deny rules); traffic not explicitly allowed is denied by default.","truth_value":"IN","source":"entries/2026/03/08/ec2-security-groups.md","source_url":"","source_hash":"84edf14aea8ab364","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"security-groups-only-allow-rules-no-deny","truth_value":"IN","reason":"premise"}]}}