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Ibrahim S
Ibrahim S

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Firewalls Are Still the First Line of Defense — Here’s How Azure Reinvents Them

Cloud security isn’t just about protecting data. It’s about securing the entire network layer. Microsoft Azure offers a powerful set of services that help organizations safeguard their workloads end-to-end.

Here are the key building blocks of Azure network security 🔐:

  • Network Security Groups (NSGs) – Control inbound/outbound traffic at the subnet or NIC level.
  • Azure Firewall – A cloud-native, scalable firewall with threat intelligence, FQDN filtering & outbound rules.
  • DDoS Protection – Always-on monitoring to mitigate volumetric, protocol, and resource layer attacks.
  • Private Link & Service Endpoints – Securely connect to Azure services without exposing traffic to the public internet.
  • VPN Gateway & ExpressRoute – Establish secure hybrid connections between on-prem and Azure.
  • Web Application Firewall (WAF) – Protect apps from OWASP top 10 vulnerabilities like SQL injection & XSS.

Azure Firewall is a cloud-native and intelligent network firewall security service that provides the best of breed threat protection for your cloud workloads running in Azure.

It's a fully stateful firewall as a service with built-in high availability and unrestricted cloud scalability. It provides both east-west and north-south traffic inspection.

Firewalls act as the first line of defense, ensuring only trusted traffic flows across environments.

Azure Firewall HandsOn

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