Is USO supposed to work over Windows VMs with Client OS?

Question

Is USO supposed to work over Windows VNMs with Client OS?

I succeed in catching USO packets over Windows Server Bar Metal servers but no USO packets over Windows VMs with Client OS.

Answer 1

Hello,

Thank you for posting in Q&A forum.

The Universal Sensor Operator (USO) packets should work over Windows Virtual Network Machines (VNMs) with Client Operating Systems (OS), just as they do on bare metal servers. However, there can be several factors that might affect their operation in VMs:

Network Configuration: Ensure that the virtual network settings for your VM are correctly configured to allow USO packet traffic. This includes checking network adapters, virtual switches, and firewall settings.

Packet Filtering: Some virtualization platforms may have default settings or filters that block certain types of traffic. Check your VM's network settings to ensure USO packets are not being filtered out.

Hypervisor Settings: The hypervisor (e.g., Hyper-V, VMware, etc.) might have specific settings that affect network traffic. Verify that your hypervisor is configured to allow the necessary traffic.

Driver Issues: Ensure that the network drivers within the VM are up to date and properly configured. Outdated or misconfigured drivers can interfere with network traffic.

Security Software: Antivirus or other security software on the VM could be blocking the USO packets. Temporarily disabling such software can help determine if it's causing the issue.

Windows Firewall: Check the firewall settings on the Windows Client OS to ensure it is not blocking the USO packets.

I hope the information above is helpful.

Best Regards,

Yanhong Liu

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Answer 2

Thank you for your response

First, as you mentioned, I asked about UDP Segmentation OFfload and not about The Universal Sensor Operator (USO).

Second, I have the same issue on bare-metal servers with Windows Client OS, so it's not related to VMs but to the Client OS.

Any suggestions?