From the course: Azure Administration: Load Balancers and Application Gateways

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External and internal load balancers

External and internal load balancers - Azure Tutorial

From the course: Azure Administration: Load Balancers and Application Gateways

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External and internal load balancers

- [Narrator] Now, let's take a look at the differences between External Load Balancers and Internal Load Balancers. I'm going to use each one. An External Load Balancer basically maps a public IP address and ports to internal targets. That means that it will receive communications from the different clients that are on the internet, and send those requests to internal targets like a web server, or a scale set. It applies load balancing rules. So when the load balancer receives the request, it will then decide which of the servers in the back-end pool will receive those requests. It also uses Port Address Translation which lets the load balancer modify the port where the client is connecting. So on the external side where the load balancer has the public IP address, it could be receiving connections to the Port 80 but then those connections could be re-sent to the Port 8080 on the back-end. And this is typically used for…

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