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Cloud Computing · Advanced

Gateway Load Balancer (GWLB)

AWS load balancer that transparently inserts fleets of third-party virtual network appliances, such as firewalls, into traffic paths.

Definition

GWLB operates at layer 3, distributing traffic to appliance targets using the GENEVE protocol on port 6081 while preserving flow symmetry. Gateway Load Balancer endpoints let VPC route tables steer traffic to centralized inspection appliances.

Example

All ingress traffic is routed through GWLB endpoints to a scalable fleet of Palo Alto Networks VM-Series firewalls.

Exam tip

GWLB and GENEVE are the keywords for scaling third-party inspection appliances in AWS.

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