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Cosmos DB – Protect From Direct Internet Traffic
This check ensures that Azure Cosmos DB DocumentDB accounts are not directly accessible from the public internet. Access should be restricted using private endpoints, virtual network rules, or firewall IP restrictions to reduce exposure to external threats.
Check Details
- Resource: Azure Cosmos DB (DocumentDB)
- Check: Ensure Cosmos DB Is Protected from Direct Internet Access
- Risk: Cosmos DB accounts that allow unrestricted public network access may be exposed to unauthorized access, data exfiltration, and malicious activity. Public endpoints increase the attack surface and may lead to data breaches if not properly secured.
Remediation via Azure Portal
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Log in to the Azure Portal.
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Navigate to Azure Cosmos DB and select the affected database account.
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Under Settings, select Networking.
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Under Public network access, ensure access is set to Selected networks or Disabled.
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If public access is required, configure:
- Specific IP address firewall rules, or
- Virtual Network integration using service endpoints, or
- Private Endpoint connections.
- Click Save to apply the configuration.
Remediation via Azure CLI
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Open Azure Cloud Shell or a local terminal with Azure CLI installed.
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Disable public network access for the Cosmos DB account:
az cosmosdb update \ --resource-group <resource-group> \ --name <cosmos-account-name> \ --public-network-access Disabled
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Alternatively, restrict public access to selected IP ranges:
az cosmosdb update \ --resource-group <resource-group> \ --name <cosmos-account-name> \ --ip-range-filter <allowed-ip-address>
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Verify public network access status:
az cosmosdb show \ --resource-group <resource-group> \ --name <cosmos-account-name> \ --query publicNetworkAccess
The output should return "Disabled" or confirm that only selected networks are permitted.