ELB Security Groups and Monitoring

Learn about the different security groups and how monitoring works for ELBs.

ELB security groups

Security groups control the ports and protocols that can reach the front-end listener.

In non-default VPCs, you can choose which security group to assign. You must assign a security group for the ports and protocols on the front-end listener. You need to also allow the ports and protocols for the health check ports and backend listeners.

Security group configuration for ELB

Inbound to ELB (allow)

  • Internet-facing ELB:
    • Source:
    • Protocol: TCP
    • Port: ELB listener ports

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