How 3 Cloud IDS Endpoints Cover 12 Gbps

Scaling Cloud IDS for High Throughput Inspection

A security engineer is designing an application-layer intrusion detection strategy for a mission-critical financial processing workload running across multiple zones in a single Google Cloud region. The workload experiences a sustained traffic volume of 12 Gbps, requires deep Layer 7 inspection of both ingress/egress and east-west intra-subnet lateral communications for malware and command-and-control activity, and must identify applications regardless of the ports used.

During testing, specific benign internal maintenance tasks triggered false-positive alerts against standard intrusion signatures.

Which configuration should the security engineer deploy to inspect this application traffic and tune the detection profile?

Establish Private Services Access with Google-managed services, provision three Cloud IDS endpoints in the region, attach Packet Mirroring policies covering the workload subnets, and configure threat exceptions for the specific false-positive signature IDs.

Deploy Google Cloud Armor security policies with preconfigured WAF rules attached to an internal TCP/UDP load balancer, and apply Layer 7 rate-limiting rules across all backend instances.

Configure VPC Network Peering to an external transit VPC, enable VPC Flow Logs with extended metadata sampling, and apply Layer 4 Cloud NGFW firewall rules with logging enabled.

Provision a single Cloud IDS endpoint in the region relying on anomalous burst capacity to process the 12 Gbps sustained throughput, attach an ingress-only Packet Mirroring policy, and disable the default signature set in the profile.

Explanations

Establish Private Services Access with Google-managed services, provision three Cloud IDS endpoints in the region, attach Packet Mirroring policies covering the workload subnets, and configure threat exceptions for the specific false-positive signature IDs.

What Cloud IDS and Threat Inspection Are

Cloud IDS (Intrusion Detection System) is a cloud-native, Google-managed threat detection service powered by Palo Alto Networks security technologies. It provides deep packet inspection across Layer 7 network traffic, identifying intrusions, malware, spyware, and command-and-control (C2) attacks. It uses App-ID to accurately classify application traffic traversing the network regardless of port, protocol, or evasion tactics.

How It Meets the Requirements

Throughput Sizing (12 Gbps sustained): Each Cloud IDS endpoint provides a recommended maximum sustained inspection capacity of 5 Gbps. For a sustained workload of 12 Gbps, provisioning three IDS endpoints provides 15 Gbps of aggregate capacity, ensuring proper traffic distribution without packet loss.
North-South and East-West Visibility: By leveraging Private Services Access (PSA) and attaching Packet Mirroring policies to the workload subnets or VM instances, Cloud IDS inspects both perimeter ingress/egress traffic and internal, intra-subnet east-west VM-to-VM communication for lateral movement.
Application Identification: Cloud IDS natively integrates Palo Alto Networks App-ID technology, which identifies Layer 7 applications regardless of non-standard ports or encryption.
Tuning and Sensitivity Adjustment: Administrators can configure threat exceptions to suppress alerts on specific benign signature IDs without disabling entire threat categories or reducing overall detection sensitivity.

Key Advantages and Capabilities

Non-Inline Architecture: Out-of-band packet mirroring allows comprehensive deep packet inspection without introducing network latency or inline single points of failure.
Granular Policy Tuning: Allows configuring threat severity thresholds (Informational, Low, Medium, High, Critical) and defining granular threat exceptions for benign operational traffic.
Native Peered Connectivity: Operates over managed Private Services Access, keeping mirrored traffic on Google's private backplane.

Why This Is Optimal

This architecture directly addresses high-throughput scaling (3 endpoints for 12 Gbps), full east-west packet mirroring visibility, App-ID Layer 7 classification, and precision alert tuning using threat exceptions.

View source documentation

Deploy Google Cloud Armor security policies with preconfigured WAF rules attached to an internal TCP/UDP load balancer, and apply Layer 7 rate-limiting rules across all backend instances.

What Google Cloud Armor Does

Google Cloud Armor is an edge and load balancer security service providing Web Application Firewall (WAF) protections, Layer 7 DDoS mitigation, IP allowlists/denylists, and preconfigured Core Rule Set (CRS) protections against standard web application attacks (e.g., SQLi, XSS).

Why It Doesn't Meet the Requirement

Unsupported Load Balancer Type: Google Cloud Armor security policies attach to external and internal Application Load Balancers (HTTP/HTTPS), not Internal Passthrough or Internal Proxy TCP/UDP Load Balancers.
Lack of Intra-Subnet Lateral Inspection: Cloud Armor evaluates traffic passing through supported load balancers; it cannot inspect direct VM-to-VM intra-subnet lateral traffic.
No General Malware/C2 Protocol Inspection: Cloud Armor focuses primarily on HTTP/HTTPS request semantics and WAF rules rather than broad Layer 7 network malware scanning, spyware analysis, and port-agnostic App-ID identification.

Key Limitations

Cloud Armor cannot perform packet mirroring or general network intrusion detection for non-HTTP protocols.
It does not provide network-layer threat exceptions for internal maintenance tooling.

This Answer Would Be Correct If

The architecture required inline Web Application Firewall (WAF) filtering and Layer 7 rate limiting for public-facing or internal HTTP/HTTPS web application endpoints.

View source documentation

Configure VPC Network Peering to an external transit VPC, enable VPC Flow Logs with extended metadata sampling, and apply Layer 4 Cloud NGFW firewall rules with logging enabled.

What VPC Flow Logs and Cloud NGFW Layer 4 Rules Do

VPC Flow Logs record network flow metadata (source/destination IP, port, protocol, byte count, packet count) for VPC network interfaces. Standard Cloud Next Generation Firewall (NGFW) Layer 4 rules permit or deny traffic based on 5-tuple attributes (source/destination IP, port, protocol).

Why It Doesn't Meet the Requirement

No Layer 7 Deep Packet Inspection: VPC Flow Logs and Layer 4 firewall rules operate exclusively on packet headers and flow metadata; they cannot inspect payload contents for malware, spyware, or exploit payloads.
No App-ID Capabilities: Layer 4 rules enforce controls strictly on destination port numbers and cannot identify applications using dynamic, non-standard ports or evasive protocols.
No Threat Exception Tuning: Flow logs only generate log records and cannot be tuned with threat signature exception profiles.

Key Limitations

Flow logs provide telemetry rather than automated signature-based threat detection.
Layer 4 firewalls are blind to application-layer attacks concealed within standard permitted ports (e.g., HTTP/HTTPS).

This Answer Would Be Correct If

The goal was to perform high-level network traffic analysis, verify 5-tuple connection paths, and log accepted/denied connections without inspecting packet payloads.

View source documentation

Provision a single Cloud IDS endpoint in the region relying on anomalous burst capacity to process the 12 Gbps sustained throughput, attach an ingress-only Packet Mirroring policy, and disable the default signature set in the profile.

What This Configuration Does

This option deploys a single Cloud IDS endpoint in the region, relying on peak burst throughput limits, restricts mirrored traffic to ingress only, and deactivates the default signature set to eliminate false positives.

Why It Doesn't Meet the Requirement

Throughput Under-Provisioning: A single Cloud IDS endpoint is rated for a recommended sustained capacity of 5 Gbps. Although it can handle anomalous, short-lived traffic bursts up to 17 Gbps, relying on a single endpoint for a sustained 12 Gbps workload will lead to dropped mirrored packets and missed detections.
Missing East-West and Egress Visibility: An ingress-only mirroring policy completely ignores outbound data exfiltration (egress) and VM-to-VM lateral movement (east-west intra-subnet traffic).
Compromised Threat Detection: Disabling the default signature set turns off standard intrusion and malware detection entirely rather than selectively tuning out specific benign false positives.

Key Limitations

Burst capacity is designed exclusively for transient traffic spikes, not steady-state baseline traffic.
Disabling base signature sets leaves workloads vulnerable to common Common Vulnerabilities and Exposures (CVEs) and malware payloads.

This Answer Would Be Correct If

The workload experienced a baseline of under 5 Gbps with rare, momentary spikes to 12 Gbps, required only perimeter ingress inspection, and used a completely custom rule base rather than standard vendor signatures.

View source documentation

Last updated August 28, 2026Validated August 28, 2026

Scaling Cloud IDS for High Throughput Inspection

During testing, specific benign internal maintenance tasks triggered false-positive alerts against standard intrusion signatures.

Which configuration should the security engineer deploy to inspect this application traffic and tune the detection profile?

Deploy Google Cloud Armor security policies with preconfigured WAF rules attached to an internal TCP/UDP load balancer, and apply Layer 7 rate-limiting rules across all backend instances.

Configure VPC Network Peering to an external transit VPC, enable VPC Flow Logs with extended metadata sampling, and apply Layer 4 Cloud NGFW firewall rules with logging enabled.

Explanations

Establish Private Services Access with Google-managed services, provision three Cloud IDS endpoints in the region, attach Packet Mirroring policies covering the workload subnets, and configure threat exceptions for the specific false-positive signature IDs.

What Cloud IDS and Threat Inspection Are

How It Meets the Requirements

Throughput Sizing (12 Gbps sustained): Each Cloud IDS endpoint provides a recommended maximum sustained inspection capacity of 5 Gbps. For a sustained workload of 12 Gbps, provisioning three IDS endpoints provides 15 Gbps of aggregate capacity, ensuring proper traffic distribution without packet loss.
North-South and East-West Visibility: By leveraging Private Services Access (PSA) and attaching Packet Mirroring policies to the workload subnets or VM instances, Cloud IDS inspects both perimeter ingress/egress traffic and internal, intra-subnet east-west VM-to-VM communication for lateral movement.
Application Identification: Cloud IDS natively integrates Palo Alto Networks App-ID technology, which identifies Layer 7 applications regardless of non-standard ports or encryption.
Tuning and Sensitivity Adjustment: Administrators can configure threat exceptions to suppress alerts on specific benign signature IDs without disabling entire threat categories or reducing overall detection sensitivity.

Key Advantages and Capabilities

Non-Inline Architecture: Out-of-band packet mirroring allows comprehensive deep packet inspection without introducing network latency or inline single points of failure.
Granular Policy Tuning: Allows configuring threat severity thresholds (Informational, Low, Medium, High, Critical) and defining granular threat exceptions for benign operational traffic.
Native Peered Connectivity: Operates over managed Private Services Access, keeping mirrored traffic on Google's private backplane.

Why This Is Optimal

View source documentation

Deploy Google Cloud Armor security policies with preconfigured WAF rules attached to an internal TCP/UDP load balancer, and apply Layer 7 rate-limiting rules across all backend instances.

What Google Cloud Armor Does

Why It Doesn't Meet the Requirement

Unsupported Load Balancer Type: Google Cloud Armor security policies attach to external and internal Application Load Balancers (HTTP/HTTPS), not Internal Passthrough or Internal Proxy TCP/UDP Load Balancers.
Lack of Intra-Subnet Lateral Inspection: Cloud Armor evaluates traffic passing through supported load balancers; it cannot inspect direct VM-to-VM intra-subnet lateral traffic.
No General Malware/C2 Protocol Inspection: Cloud Armor focuses primarily on HTTP/HTTPS request semantics and WAF rules rather than broad Layer 7 network malware scanning, spyware analysis, and port-agnostic App-ID identification.

Key Limitations

Cloud Armor cannot perform packet mirroring or general network intrusion detection for non-HTTP protocols.
It does not provide network-layer threat exceptions for internal maintenance tooling.

This Answer Would Be Correct If

The architecture required inline Web Application Firewall (WAF) filtering and Layer 7 rate limiting for public-facing or internal HTTP/HTTPS web application endpoints.

View source documentation

Configure VPC Network Peering to an external transit VPC, enable VPC Flow Logs with extended metadata sampling, and apply Layer 4 Cloud NGFW firewall rules with logging enabled.

What VPC Flow Logs and Cloud NGFW Layer 4 Rules Do

Why It Doesn't Meet the Requirement

No Layer 7 Deep Packet Inspection: VPC Flow Logs and Layer 4 firewall rules operate exclusively on packet headers and flow metadata; they cannot inspect payload contents for malware, spyware, or exploit payloads.
No App-ID Capabilities: Layer 4 rules enforce controls strictly on destination port numbers and cannot identify applications using dynamic, non-standard ports or evasive protocols.
No Threat Exception Tuning: Flow logs only generate log records and cannot be tuned with threat signature exception profiles.

Key Limitations

Flow logs provide telemetry rather than automated signature-based threat detection.
Layer 4 firewalls are blind to application-layer attacks concealed within standard permitted ports (e.g., HTTP/HTTPS).

This Answer Would Be Correct If

The goal was to perform high-level network traffic analysis, verify 5-tuple connection paths, and log accepted/denied connections without inspecting packet payloads.

View source documentation

Provision a single Cloud IDS endpoint in the region relying on anomalous burst capacity to process the 12 Gbps sustained throughput, attach an ingress-only Packet Mirroring policy, and disable the default signature set in the profile.

What This Configuration Does

Why It Doesn't Meet the Requirement

Throughput Under-Provisioning: A single Cloud IDS endpoint is rated for a recommended sustained capacity of 5 Gbps. Although it can handle anomalous, short-lived traffic bursts up to 17 Gbps, relying on a single endpoint for a sustained 12 Gbps workload will lead to dropped mirrored packets and missed detections.
Missing East-West and Egress Visibility: An ingress-only mirroring policy completely ignores outbound data exfiltration (egress) and VM-to-VM lateral movement (east-west intra-subnet traffic).
Compromised Threat Detection: Disabling the default signature set turns off standard intrusion and malware detection entirely rather than selectively tuning out specific benign false positives.

Key Limitations

Burst capacity is designed exclusively for transient traffic spikes, not steady-state baseline traffic.
Disabling base signature sets leaves workloads vulnerable to common Common Vulnerabilities and Exposures (CVEs) and malware payloads.

This Answer Would Be Correct If

View source documentation

Last updated August 28, 2026Validated August 28, 2026

Scaling Cloud IDS for High Throughput Inspection

Explanations

Establish Private Services Access with Google-managed services, provision three Cloud IDS endpoints in the region, attach Packet Mirroring policies covering the workload subnets, and configure threat exceptions for the specific false-positive signature IDs.

What Cloud IDS and Threat Inspection Are

How It Meets the Requirements

Key Advantages and Capabilities

Why This Is Optimal

Deploy Google Cloud Armor security policies with preconfigured WAF rules attached to an internal TCP/UDP load balancer, and apply Layer 7 rate-limiting rules across all backend instances.

What Google Cloud Armor Does

Why It Doesn't Meet the Requirement

Key Limitations

This Answer Would Be Correct If

Configure VPC Network Peering to an external transit VPC, enable VPC Flow Logs with extended metadata sampling, and apply Layer 4 Cloud NGFW firewall rules with logging enabled.

What VPC Flow Logs and Cloud NGFW Layer 4 Rules Do

Why It Doesn't Meet the Requirement

Key Limitations

This Answer Would Be Correct If

Provision a single Cloud IDS endpoint in the region relying on anomalous burst capacity to process the 12 Gbps sustained throughput, attach an ingress-only Packet Mirroring policy, and disable the default signature set in the profile.

What This Configuration Does

Why It Doesn't Meet the Requirement

Key Limitations

This Answer Would Be Correct If

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Scaling Cloud IDS for High Throughput Inspection

Explanations

Establish Private Services Access with Google-managed services, provision three Cloud IDS endpoints in the region, attach Packet Mirroring policies covering the workload subnets, and configure threat exceptions for the specific false-positive signature IDs.

What Cloud IDS and Threat Inspection Are

How It Meets the Requirements

Key Advantages and Capabilities

Why This Is Optimal

Deploy Google Cloud Armor security policies with preconfigured WAF rules attached to an internal TCP/UDP load balancer, and apply Layer 7 rate-limiting rules across all backend instances.

What Google Cloud Armor Does

Why It Doesn't Meet the Requirement

Key Limitations

This Answer Would Be Correct If

Configure VPC Network Peering to an external transit VPC, enable VPC Flow Logs with extended metadata sampling, and apply Layer 4 Cloud NGFW firewall rules with logging enabled.

What VPC Flow Logs and Cloud NGFW Layer 4 Rules Do

Why It Doesn't Meet the Requirement

Key Limitations

This Answer Would Be Correct If

Provision a single Cloud IDS endpoint in the region relying on anomalous burst capacity to process the 12 Gbps sustained throughput, attach an ingress-only Packet Mirroring policy, and disable the default signature set in the profile.

What This Configuration Does

Why It Doesn't Meet the Requirement

Key Limitations

This Answer Would Be Correct If

Try 10 interactive questions like this one, free

Related questions

Cloud NGFW Threat Logs to Pub/Sub SIEM

GKE Egress Gateway with Cloud Service Mesh

Service Account Token Creator Role Scope

Secret Manager User-Managed Replication with Regional CMEK

Cloud KMS CryptoKeyVersion Disable and Destroy

Storage Transfer Service Synchronization Options