ELB Security Groups and Monitoring

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

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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: 0.0.0.0/0
    • Protocol: TCP
    • Port: ELB listener ports

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