Free Assessment

Amazon_EC2_6

Ensure All ELB is using HTTPS listener

Description

A load balancer takes requests from clients and distributes them across the EC2 instances that are registered with the load balancer (also known as back-end instances).
A listener is a process that checks for connection requests. It is configured with a protocol and a port for front-end (client to load balancer) connections

  • Note: an HTTPS listener configured on the ELB is not mandatory if you are
    terminating SSL connections directly on the Web Tier EC2 instances, and using a
    TCP listener on the ELB (TCP pass-through)

Remediation

Using the Amazon unified command line interface:

  • If the ListenerDescription field is missing, add a new HTTPS listener configured with a SSLTLS certificate (the listener forwards traffic to the backend instances on port 80, but this can be modified by editing InstancePort=80):
    aws elb create-load-balancer-listeners –load-balancer-name <elb> –listeners Protocol=HTTPS,LoadBalancerPort=443,InstanceProtocol=HTTP,InstancePort=80, SSLCertificateId <ssl_certificate_arn>


References:

  1. http://docs.aws.amazon.com/cli/latest/reference/elb/describe-load-balancers.html
  2. http://docs.aws.amazon.com/cli/latest/reference/elb/create-load-balancer-listeners.html
  3. http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/elb-listener-config.html
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Service

EC2

Severity

High

Compliance

Mapping

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