https://stackoverflow.com/questions/40471955/how-to-download-aws-certificate-to-use-it-with-nodejs
enable the certificate on the ELB
Nope, you enable the certificate on the ELB. SSL termination happens on the ELB, and communication between the ELB and your NodeJS server occurs over HTTP inside your VPC. The ELB will send a special HTTP header X-Forwarded-Proto to your NodeJS server, which you can check if you need to know if the connection between the ELB and the client is over HTTP or HTTPS.
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