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Zorluk: OrtaPlanning Network Load Balancing, Cloud DNS, and Cloud CDN

A company is planning to deploy a gaming telemetry ingest service on Google Cloud Compute Engine. The service receives raw, non-HTTP TCP traffic on port 7000 directly from external game client applications around the world. The architecture team requires a load balancing solution that preserves the original client IP addresses in backend server logs without terminating the TCP connections at an intermediary proxy. Which Google Cloud load balancer should the team select?

  1. External Passthrough Network Load BalancerCevap
  2. B
    External Application Load Balancer
  3. C
    Internal Passthrough Network Load Balancer
  4. D
    External Proxy Network Load Balancer without PROXY protocol

Cevap

External Passthrough Network Load Balancer is the correct architectural choice because it handles external raw TCP traffic at Layer 4 and preserves the original client source IP address directly.
An External Passthrough Network Load Balancer is a regional Layer 4 load balancer that routes raw TCP/UDP traffic directly to Compute Engine backend instances. Because it does not terminate connections at a proxy, the original client packet headers (including the source IP address) remain intact when delivered to the backend VMs.

Adım Adım Çözüm

1
Identify traffic scope and protocol requirements
Traffic comes from external internet clients using raw non-HTTP TCP on custom port 7000.
Protocol requirements rule out Layer 7 (HTTP/HTTPS) load balancers.
2
Identify network routing and IP preservation requirements
The solution must preserve client source IP addresses and avoid proxy termination.
Passthrough load balancers route packets directly to backend instances without terminating TCP sessions.
3
Select the appropriate GCP load balancer type
External Passthrough Network Load Balancer satisfies external exposure, raw TCP support, and client IP preservation.
It operates at Layer 4 as a regional passthrough service built on Google Cloud Maglev architecture.

Anahtar Kavram

Selecting GCP Load Balancers based on traffic scope (internal/external), OSI layer (L4 vs L7), and packet passthrough vs proxy behavior.
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Konular

Planning Network Load Balancing, Cloud DNS, and Cloud CDN

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