What is the MOST secure way to meet these requirements?
Enable TLS pass through on the ALB, and handle decryption at the server using Elliptic Curve Diffie-Hellman (ECDHE) cipher suites.
Create a listener on the ALB that uses encrypted connections with Elliptic Curve Diffie-Hellman (ECDHE) cipher suites, and pass the traffic in the clear to the server.
Create a listener on the ALB that uses encrypted connections with Elliptic Curve Diffie-Hellman (ECDHE) cipher suites, and use encrypted connections to the servers that do not enable Perfect Forward Secrecy (PFS).
Create a listener on the ALB that does not enable Perfect Forward Secrecy (PFS) cipher suites, and use encrypted connections to the servers using Elliptic Curve Diffie-Hellman (ECDHE) cipher suites.