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Simply creating an endpoint does not redirect network packets onto the appliance data path. For the stated conditions, client-to-ALB acceptance does not imply that targets allow connections originated by the ALB. The more specific mechanism is security groups on distinct hops must permit the intended listener-to-target connection.

Endpoint private addressing does not automatically enforce least-privilege client access. For the stated conditions, client-to-ALB acceptance does not imply that targets allow connections originated by the ALB. The more specific mechanism is security groups on distinct hops must permit the intended listener-to-target connection.

A GWLB appliance insertion pattern differs from WAF HTTP rules or TCP application balancing. For the stated conditions, client-to-ALB acceptance does not imply that targets allow connections originated by the ALB. The more specific mechanism is security groups on distinct hops must permit the intended listener-to-target connection.

An attachment can have a different associated routing view from where its CIDR propagates. For the stated conditions, organization membership alone does not necessarily authorize use of every privately owned network resource. The more specific mechanism is AWS RAM resource sharing must grant the principal access before cross-account attachment creation.

An attached TGW does not automatically redirect packets that a VPC subnet table sends elsewhere. The decisive technical distinction is AWS RAM resource sharing must grant the principal access before cross-account attachment creation; organization membership alone does not necessarily authorize use of every privately owned network resource.

Asymmetric paths can break flows because independent appliances lack the same connection state. That property alone cannot account for the reported symptom; organization membership alone does not necessarily authorize use of every privately owned network resource.

Tunnel health alone does not create a routing advertisement for an omitted customer network. The needed control instead targets site-to-Site VPN tunnel establishment depends on mutually supported IKE and IPsec encryption proposals; it succeeds when phase-one and phase-two negotiation succeed with approved algorithms.

A router talking to its own address or an incorrect peer cannot establish the required TCP BGP session. The needed control instead targets site-to-Site VPN tunnel establishment depends on mutually supported IKE and IPsec encryption proposals; it succeeds when phase-one and phase-two negotiation succeed with approved algorithms.

A provider-side creation is not the same as AWS customer authorization for a hosted service. It does not directly achieve the required result: phase-one and phase-two negotiation succeed with approved algorithms. The constraint is that negotiation fails when peers cannot agree on an acceptable cryptographic security association.

Subnet boundaries are a unit for route and ACL policy in addition to IP address capacity. That property alone cannot account for the reported symptom; a healthy NLB can still direct clients to overloaded targets when the target fleet is undersized.

Target discovery must follow workload life cycle to avoid forwarding to stopped or obsolete tasks. That property alone cannot account for the reported symptom; a healthy NLB can still direct clients to overloaded targets when the target fleet is undersized.

Encrypted packet overhead can make sizes that fit locally exceed the negotiated tunnel path. That property alone cannot account for the reported symptom; a healthy NLB can still direct clients to overloaded targets when the target fleet is undersized.

Volumetric layer-three/four floods require upstream DDoS mitigation beyond individual HTTP pattern rules. For the stated conditions, domain matching depends on visible protocol metadata and may not identify all encrypted application destinations. The more specific mechanism is network Firewall domain list or stateful application rules can inspect supported protocol host metadata.

HTTP request attribute filtering is more precise than rejecting every request at a network IP address. For the stated conditions, domain matching depends on visible protocol metadata and may not identify all encrypted application destinations. The more specific mechanism is network Firewall domain list or stateful application rules can inspect supported protocol host metadata.

Packets not sent to the stateful engine cannot be filtered by its configured stateful rules. The reported evidence instead concerns network Firewall domain list or stateful application rules can inspect supported protocol host metadata: domain matching depends on visible protocol metadata and may not identify all encrypted application destinations.

Gateway attachments are route targets; incorrect associations can blackhole return flows despite healthy tunnels. In this situation, gateway ownership remains separate; neither account should silently attach the other's resource. The proposed change does not ensure the association enters the expected active state with approved prefix advertisements.

A provider-side creation is not the same as AWS customer authorization for a hosted service. In this situation, gateway ownership remains separate; neither account should silently attach the other's resource. The proposed change does not ensure the association enters the expected active state with approved prefix advertisements.

A healthy VPN tunnel does not automatically install every required prefix into every TGW routing domain. In this situation, gateway ownership remains separate; neither account should silently attach the other's resource. The proposed change does not ensure the association enters the expected active state with approved prefix advertisements.

A broad earlier deny can supersede a later allow despite permissive security groups. It does not directly achieve the required result: only designated workloads can establish the service connection through the endpoint. The constraint is that endpoint private addressing does not automatically enforce least-privilege client access.

Subnet membership alone is weaker identity than authorized workload security-group membership. In this situation, endpoint private addressing does not automatically enforce least-privilege client access. The proposed change does not ensure only designated workloads can establish the service connection through the endpoint.

Group references bind access to associated workload identities rather than static IP lists. It does not directly achieve the required result: only designated workloads can establish the service connection through the endpoint. The constraint is that endpoint private addressing does not automatically enforce least-privilege client access.

Target discovery must follow workload life cycle to avoid forwarding to stopped or obsolete tasks. That adjustment does not address the controlling condition: weights alone can continue steering toward failed endpoints unless health status affects selection. Verify during a controlled Region outage, healthy weighted records remain in DNS responses.

Encrypted packet overhead can make sizes that fit locally exceed the negotiated tunnel path. The needed control instead targets Route 53 health check integration can remove unhealthy records from eligible weighted DNS decisions; it succeeds when during a controlled Region outage, healthy weighted records remain in DNS responses.

Health check failure changes eligible authoritative answers but does not erase cached data at recursive resolvers. In this situation, weights alone can continue steering toward failed endpoints unless health status affects selection. The proposed change does not ensure during a controlled Region outage, healthy weighted records remain in DNS responses.

Transit VIF connectivity targets Transit Gateway associations instead of directly attaching every individual VPC. It does not directly achieve the required result: both VPN tunnels are established and authorized private subnets exchange traffic. The constraint is that IPsec provides confidentiality and integrity across a transport that may use the public internet.

The virtual interface type determines whether connectivity targets private VPC addresses or public AWS endpoints. That adjustment does not address the controlling condition: IPsec provides confidentiality and integrity across a transport that may use the public internet. Verify both VPN tunnels are established and authorized private subnets exchange traffic.

A static routing arrangement does not automatically form BGP adjacencies or exchange advertisements. That adjustment does not address the controlling condition: IPsec provides confidentiality and integrity across a transport that may use the public internet. Verify both VPN tunnels are established and authorized private subnets exchange traffic.

An event can trigger a bounded response without granting the workflow permission to reconfigure every gateway. For the stated conditions, automated compliance logic can itself create broad security exposure if the execution role is overprivileged. The more specific mechanism is network automation roles should be scoped to necessary actions and target resource conditions.

High-level constructs can create network defaults that differ from a specific compliance design if inputs are vague. The decisive technical distinction is network automation roles should be scoped to necessary actions and target resource conditions; automated compliance logic can itself create broad security exposure if the execution role is overprivileged.

Event-driven notifications observe resource modifications instead of waiting for scheduled inventory scans. That property alone cannot account for the reported symptom; automated compliance logic can itself create broad security exposure if the execution role is overprivileged.

CDK is an authoring layer, not a replacement for CloudFormation's deployed resource lifecycle. For the stated conditions, iaC syntax validity does not establish compliance with organizational network policy. The more specific mechanism is cloudFormation Guard or policy-as-code checks can reject disallowed network resource configurations before deployment.

A completed stack records one deployment state rather than permanently locking every operator console. The reported evidence instead concerns cloudFormation Guard or policy-as-code checks can reject disallowed network resource configurations before deployment: iaC syntax validity does not establish compliance with organizational network policy.

Logical-ID changes can cause CloudFormation to replace networking resources unexpectedly. The reported evidence instead concerns cloudFormation Guard or policy-as-code checks can reject disallowed network resource configurations before deployment: iaC syntax validity does not establish compliance with organizational network policy.