You can limit access to your storage account to requests originating from specified IP addresses, IP ranges, subnets in an Azure Virtual Network (VNet), or resource instances of some Azure services.
public endpoint that is accessible through the internet.
reate Private Endpoints for your storage account, which assigns a private IP address from your VNet to the storage account, and secures all traffic between your VNet and the storage account over a private link.
Azure storage firewall provides access control for the public endpoint of your storage account.
can also use the firewall to block all access through the public endpoint when using private endpoints.
storage firewall configuration also enables select trusted Azure platform services to access the storage account securely.
An application that accesses a storage account when network rules are in effect still requires proper authorization for the request
h Azure Active Directory (Azure AD) credentials for blobs and queues, with a valid account access key, or with an SAS token.
container is configured for anonymous public access, requests to read data in that container do not need to be authorized, but the firewall rules remain in effect and will block anonymous traffic.
Turning on firewall rules for your storage account blocks incoming requests for data by default, unless the requests originate from a service operating within an Azure Virtual Network (VNet) or from allowed public IP addresses
hat operate from within a VNet by allowing traffic from the subnet hosting the service instance.
you should first configure a rule to deny access to traffic from all networks (including internet traffic) on the public endpoint, by default
you should configure rules that grant access to traffic from specific VNets.
can also configure rules to grant access to traffic from selected public internet IP address ranges, enabling connections from specific internet or on-premises clients.
configuration enables you to build a secure network boundary for your applications.
You can combine firewall rules that allow access from specific virtual networks and from public IP address ranges on the same storage account.
all rules can be applied to existing storage accounts, or when creating new storage accounts.
Storage firewall rules apply to the public endpoint of a storage account.
You don't need any firewall access rules to allow traffic for private endpoints of a storage accoun
process of approving the creation of a private endpoint grants implicit access to traffic from the subnet that hosts the private endpoint.
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