Azure Network WatcherMonitoring

Azure Network Watcher: Overview and Configuration Example

Azure Network Watcher is a comprehensive network monitoring and troubleshooting service provided by Microsoft Azure. It enables you to monitor, diagnose, and gain insights into the performance and health of your Azure network resources. Here's an overview of Azure Network Watcher along with a configuration example:

Features of Azure Network Watcher

  1. Network Monitoring:

    • Monitors the health and performance of your Azure network resources, including virtual networks, subnets, and virtual machines.
  2. Topology Visualization:
    • Provides visualizations of network topology, allowing you to understand the relationships between different network components.
  3. Connectivity Checks:
    • Performs connectivity checks between resources within a virtual network or between different virtual networks.
  4. Packet Captures:
    • Allows you to capture and analyze network traffic for troubleshooting and diagnostics.
  5. Flow Logs:
    • Captures information about IP traffic flowing through network interfaces, enabling analysis of network behavior and patterns.
  6. Security Group View:
    • Visualizes the effective security rules applied to resources based on network security groups (NSGs).
  7. VPN Diagnostics:
    • Assists in diagnosing connectivity issues for Azure VPN gateways.

Configuration Example

Let's configure Azure Network Watcher for a sample scenario:

  1. Login to Azure Portal:

  2. Create a Network Watcher:
    • Click on "Create a resource" and search for "Network Watcher."
    • Select "Network Watcher" and click "Create" to start the Network Watcher creation.
  3. Configure Network Watcher Settings:
    • Specify details such as subscription, resource group, Network Watcher name, region, and other configuration options.
  4. Enable Flow Logs (Optional):
    • If you want to capture and analyze network traffic, enable flow logs for specific network interfaces or subnets.
  5. Run Connectivity Checks:
    • Use Network Watcher to run connectivity checks between resources. Validate connectivity within a virtual network or across virtual networks.
  6. Perform Packet Captures (Optional):
    • If troubleshooting requires detailed packet analysis, perform packet captures on specific network interfaces.
  7. Visualize Network Topology:
    • Utilize the topology visualizations in Network Watcher to understand the layout and relationships between different network components.
  8. Analyze Security Group View:
    • View and analyze the effective security rules applied to resources based on network security groups (NSGs).
  9. Configure VPN Diagnostics (Optional):
    • If you have Azure VPN gateways, use Network Watcher to diagnose connectivity issues and view VPN diagnostics.
  10. Review Flow Log Data:
    • If flow logs are enabled, review the captured data to gain insights into network traffic patterns and behavior.
  11. Create Alerts (Optional):
    • Set up alerts based on specific conditions or events detected by Network Watcher. Configure alert rules to notify you when issues occur.
  12. Integrate with Azure Monitor (Optional):
    • Leverage the integration with Azure Monitor for a unified monitoring and management experience.
  13. Clean Up Resources:
    • Once done, clean up resources by deleting the Network Watcher or specific resources as needed.
IT Knowledge Base · Azure · Azure Network Watcher