Microsoft announced the preview of Gateway Load Balancer, a fully managed service enabling users to deploy, scale, and enhance the availability of third party Network Virtual Appliances (NVAs) in Azure, that builds on that capability. Users can add a favorite third party appliance whether it is a firewall, inline DDoS appliance, deep packet inspection system, or even a custom appliance into the network path transparently – all with a single click.
With Gateway Load Balancer, users can add or remove advanced network functionality without additional management overhead. Users can think of Gateway LB as providing the bump-in-the-wire technology needed to ensure all traffic to a public endpoint is first sent to the appliance before the application Gateway LB ensures symmetrical flows or ensuring a consistent route to the NVA – without having to update routes manually. As a result, packets that traverse the same network path in both directions to function are able to do so.
Inserting NVAs in the path transparently is also known as service chaining. With Gateway LB, users can enable service chaining in Azure. Once chained to a Standard Public Load Balancer frontend or IP configuration on a virtual machine, no additional configuration is needed to ensure traffic to and from the application endpoint is sent to the Gateway LB. Traffic flows from the consumer virtual network to the provider virtual network and then returns to the consumer virtual network. Gateway Load Balancer exchanges application traffic with the appliance in its backend pool using VXLAN encapsulation. This allows preservation of the content of the traffic. The consumer virtual network and provider virtual network can be in different subscriptions, tenants, or regions enabling greater flexibility and ease of management.
Gateway Load Balancer brings together a pass-through load balancer to distribute traffic at scale and a single entry and exit point for traffic - with a single click. All users need to do is chain the application to a Gateway Load Balancer. Users can scale up or scale down as needed, and they can also leverage auto scale with virtual machine scale sets. Customers are already using Gateway LB for many scenarios - firewalls, advanced network security functions, deep packet inspection, analytics, IoT and many more.
Azure's Network Virtual Appliance partners are able to offer their managed solutions via SaaS - Software as a Service with Gateway Load Balancer. Appliance providers do not need to worry about scale, load balancing, or even availability, they can rely on Gateway LB to take care of that. Gateway Load Balancer has a rich ecosystem of partners within the Azure Marketplace available. Cisco, for example, recently introduced their Secure Firewall Integration with Azure Gateway Load Balancer.
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November 10, 2021 at 07:00PM
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Microsoft Introduces Azure Gateway Load Balancer| ARC Advisory - ARC Viewpoints
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