Microsoft Is Retiring Azure NSG Flow Logs—Here’s What You Need to Do
By Patrick Bedwell
Support for Azure Network Security Group (NSG) flow logs is ending soon. Are you ready?
Starting June 30, 2025, Microsoft will block the creation of new NSG flow logs. By September 30, 2027, all NSG flow logs—and any analytics tied to them—will be permanently deleted.
If your organization relies on NSG flow logs for network security or observability, it’s time to start your migration.
Why You Need to Migrate to VNet Flow Logs
Azure Virtual Network (VNet) flow logs are the future of cloud security and observability. Unlike NSG flow logs, which only capture traffic governed by NSG rules, VNet flow logs give you:
- Deeper visibility into all IP traffic entering and exiting subnets, regardless of NSG configuration
- Better metadata, including throughput and encryption insights
- Broader resource coverage, supporting more Azure service types
- Improved lateral (east-west) traffic visibility, which NSG logs often miss
This isn’t just a technical change—it’s a strategic opportunity to upgrade your cloud security and observability stack.
How Netography Fusion Simplifies the Transition
Netography Fusion® supports both NSG and VNet flow logs—making your transition painless.
With Fusion, you can:
➡️ Maintain full visibility across your Azure environment during and after the migration
➡️ Instrument VNet flow logs today, without losing insights from NSG logs still in use
➡️ Detect and onboard new VNets and VPCs automatically to reduce operational risks
➡️ Unify multi-cloud monitoring across Azure, AWS, Google Cloud, IBM, and Oracle (as well as on-prem)
➡️ Normalize and enrich flow data from all sources for centralized AI-powered analysis
Fusion ingests NSG and VNet logs natively—no need to rip and replace your tooling or wait for all regions to upgrade. This ensures zero visibility gaps, no operational disruption, and continuous coverage as you modernize your observability.
What This Means for Security and Network Teams
Microsoft’s deprecation isn’t just a sunset—it’s your chance to modernize network security and observability across Azure, your other cloud platforms, and on-prem as well. By migrating to VNet flow logs now and leveraging Netography Fusion’s compatibility, you get:
- Centralized visibility across hybrid and multi-cloud networks
- Improved detection of lateral movement and threat actors
- Long-term readiness as Azure evolves
Don’t Wait—Start Your Transition Today
Act now to avoid losing key telemetry and weakening your security posture. Netography Fusion makes it easy to migrate and modernize—with full support for NSG and VNet flow logs, plus multi-cloud and on-prem coverage.
👉 Start your free trial or request a demo to see how Netography Fusion future-proofs your cloud monitoring.