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Last updated: April 29, 2026
Azure has multiple network security products with overlapping but distinct purposes.
Azure has multiple network security products with overlapping but distinct purposes.
The layers
- NSG — Layer 4 ACLs at NIC or subnet level
- ASG — Application Security Group; tag-based grouping for NSG rules
- Azure Firewall — managed L4/L7 firewall; full-feature
- Application Gateway + WAF — L7 load balancer + OWASP CRS WAF
- Front Door + WAF — global CDN + WAF
- DDoS Protection Standard — adaptive DDoS protection
- Private Endpoints — private IPs for Azure services (no internet)
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