Hi,

for some reason I'm not able to see network traffic on the Azure Firewall destined for Private Endpoints. I do see the traffic when it's an HTTPS request in the Azure Firewall Application Log.

Why can't I see the TCP traffic on port 443 for Private Endpoints in the Azure Firewall ?

Our setup:

Onpremise VM --> ExpressRoute --> Azure Firewall --> Private Endpoint (ACR)

On the Onpremise VM:

tnc <privateIPofEndpoint> -port 443 <-- Traffic does not show up in the Azure Firewall (neither Network nor Application) but shows as TCPTestSucceeded: True.

If I open up a webbrowser with the https://<privateIPofEndpoint> the traffic shows up in the Azure Firewall in the Application Log (not Network log).

What is going on here ? Should I not see all the TCP traffic on port 443 with a destination of a Private Endpoint ? It's like this traffic is nowhere to be found even though the TCPTest indicate success.

If I open a webbrowser on the same machine, it's not an issue. I see the traffic on the Application log of the Azure Firewall.