Explanation: Box 1 = Use IP flow verify.
IP flow verify is a feature of Azure Network Watcher that checks if a packet is allowed or denied to or from a virtual machine. It can help diagnose connectivity issues caused by network security groups, user-defined routes, or Azure Virtual Network Manager rules1. IP flow verify can also return the name of the rule that denied the packet, which can be useful for troubleshooting2.
Connection troubleshoot is another feature of Azure Network Watcher that helps reduce the time to diagnose and resolve network connectivity issues. However, it can only test TCP or ICMP connections from certain Azure resources, such as virtual machines, Azure Bastion instances, or application gateways3. Connection troubleshoot can also detect issues such as high VM CPU utilization, DNS resolution failures, or inability to open a socket at the specified source port3.
In this scenario, you need to collect the required logs for the SharePoint workload in VNet2. Since you are not testing a specific TCP or ICMP connection, but rather checking if packets are allowed or denied by any network configuration, IP flow verify is more suitable than connection troubleshoot. You can use IP flow verify to check the direction, protocol, local IP, remote IP, local port, and remote port of the packets and see which rule is blocking them12.
To use IP flow verify, you need to enable a network watcher in the same region as the virtual machines you want to troubleshoot. Then you can use the Azure portal, PowerShell, or Azure CLI to run IP flow verify and get the results24.
Box 2 = Use Traffic analytics
To troubleshoot issues related to the SharePoint workload in VNet2, we can use Traffic Analytics. It is a networking monitoring solution that uses Network Watcher to analyze and report on traffic flows in your Azure virtual network. With Traffic Analytics, you could see information about the traffic flow patterns and security concerns detected across Azure subscriptions using network security group (NSG) flow logs. IP Flow Verify is used to verify if packets are flowing as expected between two endpoints within an Azure virtual network or between a public IP address and an endpoint inside an azure virtual network. But it doesn't provide visibility into overall traffic patterns or identify potential security threats. Connection Troubleshoot can be used when you have connectivity problems while interacting with a specific instance of a resource type being served out from Microsoft datacenters over Internet, but for troubleshooting SharePoint workloads related issue which might not necessarily correspond to internet routing/connectivity problems this may not apply.
