NET::ERR_CERT_COMMON_NAME_INVALID

Question

I have a web server hosted in AWS ECS using fargate with load balancer. I added an https listener to the load balancer with a certificate I issued using AWS ACM. The certificate is issued to a domain I own, the certificate got validated and I'm able to send https requests to the web server via the load balancer using postman.

But, when I open in the browser the url of the load balancer I'm getting the following error NET::ERR_CERT_COMMON_NAME_INVALID

what am I doing wrong?

Thanks in advance

Answer 1

what am I doing wrong?

Your SSL cert is issued for your own domain, not for "the url of the load balancer". So it does not match and you get the error.

You have to use your own domain now to access your api/website. Browsers are very strict in ensuring that SSL cert and domain match. In terms of postman, you may have disabled these checks, or postman may not be as strict.

You can check postman's ssl checks as shown below: