Installation of a linux router on azure

Question

I would like to install a linux router in azure vnet/subnet for routing, but I don't know how to do it.

I would like to create a linux router between two subnets and have both servers on the two subnets communicate through the linux router.

Is it possible to set up my own linux router in azure?

Answer 1

Hi,

By default 2 subnets in the same VNET can connect to each other. If your intension is to force the traffic between 2 subnets via an NVA, you can do that by adding a UDR and forcing the other subnet traffic to go via NVA.

Here is a lab which I have found in GitHub where you can use the steps to create an NVA in Azure: https://github.com/erjosito/azure-networking-lab#lab2

Regards,

Karthik Srinivas

Answer 2

HI @eishi,

If you are trying to filter your traffice by this specific VM that you can do are:

• Create the virtuall network
• Create the subnets required
• Create and configure this VM with access to public network (Your private configuration on linux)
• Add an UDR and attach to 2 subnets where is your VMs

• Add a route within the UDR and setup next hope to your custom linux VM

Some Additional information about routing:

https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-udr-overview

Cheers,

Luis Arias

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