How to configure a proxy limited to Windows Update services ?

Question

Hello,

I am using Azure Arc to manage my On-Premises machines directly in Azure with the help of Azure Update Manager.

For security reasons, I need to restrict my machines' access to the Internet. Therefore, I have implemented a Proxy through which all my Azure Arc agents pass to facilitate access management through the firewall. This way, we can limit management and security errors.

My issue now is that when I want to perform an update assessment on the machines, the requests do not seem to go through the proxy as I expected but are blocked by the firewall.

I need to "route" the Windows Update service requests through my proxy. However, I cannot find a solution that allows me to route only the specific traffic I am interested in without routing all the machine's traffic (http/https ofc).

Could you suggest any solutions?

Thank you in advance.

Best regards,