Provide tools to monitor, diagnose, view metrics and enable or disable logs for resources in Azure VNet
It's used to monitor the network of your IaaS
Network Watcher requires a Network Watcher Agent
Tools
IP flow verify: Detect traffic filtering problems. Check if a VM has connectivity on port X. Check connectivity issues based on NSG attached to the NIC.
Next Hop: Detecting VM routing problems. Use to check if traffic is flowing to the desired destination
Package Capture: Capture traffic from/to VM
NSG Flow Logs: Info about ingress/egress onto the NSG. Operate at Layer 4. The logs are stored in a storage account. Traffic analytics can be enabled for graphs from the NSG logs
Traffic Analysis: User and application activity
Connection troubleshoot: Diagnose connectivity. Differently from IP flow verify, it checks check there is a service listening to the request