I am looking for some guides on how to implement SSL pinning on my application running on Nginx.
I have an application load balancer that uses the certificate from ACM.
Now I want to know how can I apply SSL pinning on the Nginx side.

The application is also hosted through ECS and I have a container running Nginx.

Thanks!

I already did some research about how to modify the nginx configuration so that I can implement SSL pinning.

ssl_client_certificate /etc/nginx/certificates/client_ca.crt; 
ssl_verify_client on;

My issue is that the Nginx application only listens to port 80 and 443 is being handled on the application load balancer.