Configure the network connection for SAP ABAP/DB layer hosted in public subnet
Navigate to AWS Console -> All Services -> Compute -> Lambda and select the Lambda service that you created on previous step to execute the following steps.
Step 1: Request your SAP BASIS Admin to provide the SAP HTTPS port from transaction SMICM -> Goto -> Services.
Step 2: In your AWS console, go to EC2, locate your SAP instance and make sure the HTTPS ports in the defined AWS Security Group are opened. In the example above HTTPS port 44300.
Work with your Security team to provide fine-grained access to your security ports
You are all set. Make sure to choose your public host name / IP Address of your SAP instance.