Difference between basic and standard in terms inbound traffic flow to VMs

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Difference between basic and standard in terms inbound traffic flow to VMs

Varma 1,390

I just want to understand more about how does basic and standard public IP differs in terms of allowing inbound traffic to virtual machines ?

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Answer 1

Hello @Varma

Welcome to the Microsoft Q&A and thank you for posting your questions here.

Based on your enquiry, you would like to know Basic SKU and Standard SKU public IP addresses differ in terms of allowing inbound traffic to virtual machines in Microsoft Azure.

I will provide basic definitions and some references in the followings:

Basic public IP addresses do not support availability zones, while standard public IP addresses do. Availability zones are isolated locations within an Azure region that provide high availability and fault tolerance.
Basic public IP addresses can be associated with a virtual machine's network interface, while standard public IP addresses can be associated with either a virtual machine's network interface or a load balancer's front-end configuration.
Basic public IP addresses allow inbound traffic by default, while standard public IP addresses require a network security group to explicitly permit traffic through a public IP address.

References:

What is the difference between basic and standard public IPs in azure.

Public IP Address with Microsoft Azure.

Comparing Basic and Standard IP in Network Load Balancer.

Microsoft Virtual Machine Network IP Services 1.

Microsoft Virtual Machine Network IP Services 2.

NOTE: Some of the above may redirect you to outside Microsoft contents, and whenever you came across error 404 in any of the links. Especially the last two links, select a topic of your choice among the listed topic on the page.

I hope this is helpful! Do not hesitate to let me know if you have any other questions.

Please remember to "Accept Answer" if answer helped, so that others in the community facing similar issues can easily find the solution. Best Regards, Sina

Varma 1,390 Reputation points

2024-02-15T17:22:39.4333333+00:00

Hi Sina, regarding last point, inbound traffic means ex: RDP connection to VM , am I correct? and here source is subnet and destination is VM, is this accurate?
Sina Salam 18,951 Reputation points

2024-02-15T21:51:29.26+00:00

Hi @Varma

Yes, thank you for verifying. You are correct in your understanding.

Inbound traffic typically refers to traffics coming from outside the network or from a different subnet within the same network, directed towards a specific destination within the network. For example, in the context of a virtual machine (VM) hosted in a cloud environment:

Inbound RDP (Remote Desktop Protocol) connection refers to a connection initiated from a remote device (source) to access the VM (destination) for remote management or access purposes.

The source of this inbound traffic could be another machine in the same network, a different subnet within the same network, or even a device outside the network (if the VM has a public IP address accessible from the internet).

Regarding your second question, the source of inbound traffic could indeed be a subnet (if the traffic originates from within the same network but from a different subnet) and the destination would typically be the VM or the specific resource within the network that the traffic is intended for.

So, your understanding is accurate. Inbound traffic refers to traffic coming into the network or a specific resource within the network, with the source being external or internal devices, and the destination being a specific resource such as a VM.

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Difference between basic and standard in terms inbound traffic flow to VMs

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