Typo fix

Author: denrea

articles/ddos-protection/ddos-protection-overview.md

@@ -21,7 +21,7 @@ Azure DDoS Protection, combined with application design best practices, provides
 Azure DDoS Protection protects at layer 3 and layer 4 network layers. For web applications protection at layer 7, you need to add protection at the application layer using a WAF offering. For more information, see [Application DDoS protection](../web-application-firewall/shared/application-ddos-protection.md).
 
 > [!NOTE]
-> Azure DDoS Protections is one of the services that make up the Network Security category in Azure. Other services in this category include [Azure Firewal](../firewall/overview.md) and [Azure Web Application Firewall](../web-application-firewall/overview.md). Each service has its own unique features and use cases. For more information on this service category, see [Network Security](../networking/security/network-security.md).
+> Azure DDoS Protections is one of the services that make up the Network Security category in Azure. Other services in this category include [Azure Firewall](../firewall/overview.md) and [Azure Web Application Firewall](../web-application-firewall/overview.md). Each service has its own unique features and use cases. For more information on this service category, see [Network Security](../networking/security/network-security.md).
 
 ## Tiers