Communication between an internal alb and internet facing alb.

Question

I have an internal alb and an internet facing alb under one vpc. One of my service is running in the internal one and the other in the internet facing one. How do I establish communication between my two services in different albs. 
Note: there is no dns for the internal alb.

Riku_Kobayashi · Accepted Answer

Hello.

I'm not sure what you want to do specifically, but do you want to create a configuration like the image below?  
![a](/media/postImages/original/IMPkKRjXpuQu2fOEvVWn8vBQ)

In that case, you can communicate by simply accessing the internal ALB endpoint from the externally accessible ALB target(EC2).

Tushar Jagdale · Answer

You can also explore this pattern: Application Load Balancer-type Target Group for Network Load Balancer

https://aws.amazon.com/blogs/networking-and-content-delivery/application-load-balancer-type-target-group-for-network-load-balancer/

Communication between an internal alb and internet facing alb.

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