I'm trying to Hybrid Azure join our devices on our corporate network.
We use a UTM for firewall and Web Filtering. Normally web traffic hits the web filter when using a browser(PAC file). The required URLS for Azure Hybrid join are allowed through this proxy server. The problem is that the process of joining the device(Proxy direct) is not aware of these proxy settings so the traffic is never directed to the web filter. Instead it goes to the firewall. The firewall explicitly blocks this traffic. We need to know the IP address ranges of the URLs required for this operation so we can allow this traffic to pass through the Firewall. Microsoft can only send me to their 365 URLs and IP addresses but it's a very long list and the blocked IP addresses don't seem to be listed.
Has anyone been able to find out the IP address ranges which are required for this operation or has anyone been able to get this working a different way?
We have been able to get this to work by manually setting the proxy server on a client but this then causes issues with Teams and SCCM.
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