{"id":"firewall-rules-protocol-asymmetric-requirements","text":"Firewall rule configuration has protocol-asymmetric requirements — port specification is valid only for TCP/UDP (not ICMP/ESP/GRE), direction determines which IP flag is required (source for inbound, destination for outbound), and CIDR notation is mandatory for all IP specifications.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"firewall-rules-protocol-asymmetric-requirements","truth_value":"IN","reason":"premise"}]}}