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Verify that Server Parameter 'log_retention_days' is greater than 3 days for PostgreSQL Database ServerVerify that server parameter 'connection_throttling' is set to 'ON' for PostgreSQL Database ServerVerify that server parameter 'log_disconnections' is set to 'ON' for PostgreSQL Database ServerVerify that server parameter 'log_connections' is set to 'ON' for PostgreSQL Database ServerVerify that 'Enforce SSL connection' is set to 'ENABLED' for PostgreSQL Database ServerVerify that Server Parameter 'log_checkpoints' is set to 'ON' for PostgreSQL Database ServerVerify that Activity Log Alert exists for Create Policy AssignmentVerify that Activity Log Alert exists for Create or Update Public IP Address ruleVerify that Activity Log Alert exists for Delete SQL Server Firewall RuleVerify that Activity Log Alert exists for Create or Update SQL Server Firewall RuleVerify that Activity Log Alert exists for Delete Network Security GroupVerify that the storage account containing the container with activity logs is encrypted with Customer Managed KeyVerify that Activity Log Alert exists for Delete Policy AssignmentVerify that Activity Log Alert exists for Create or Update Network Security GroupVerify that Diagnostic Setting captures appropriate categoriesVerify that Activity Log Alert exists for Create or Update Security SolutionVerify that Activity Log Alert exists for Delete Public IP Address ruleVerify that logging for Azure AppService 'HTTP logs' is enabledVerify that logging for Azure Key Vault is 'Enabled'Verify that the Expiration Date is set for all Keys in RBAC Key VaultsEnable Role Based Access Control for Azure Key VaultVerify that Private Endpoints are Used for Azure Key VaultVerify that the Key Vault is RecoverableVerify that HTTP(S) access from the Internet is evaluated and restricted

Verify that HTTP(S) access from the Internet is evaluated and restricted

Framework Reference: A.8.23 Integration: Azure – Network Security Groups (NSGs)

Why this matters
Inbound access to ports 80 (HTTP) and 443 (HTTPS) from the Internet significantly increases attack surface. Misconfigured NSG rules exposing these ports may allow brute-force, scanning, or exploitation attempts. Restricting these ports to known IPs or internal networks helps prevent unauthorized access and lateral movement within the Azure environment.

What this check does
This Auto Check verifies that no inbound NSG rules allow unrestricted public access to TCP ports 80 or 443 from the Internet.

Check Logic:
IF any NSG rule EXISTS where:

direction = Inbound
AND

access = Allow
AND

protocol = TCP
AND

destinationPortRange = 80, 443, *, or includes 80/443 in a range
AND

sourceAddressPrefix = *, 0.0.0.0/0, /0, Internet, or Any
THEN FAIL
ELSE PASS

How to fix it

  1. Remediate via Azure Portal
  2. Go to Virtual machines
  3. For each VM, open the Networking blade
  4. Under Inbound port rules, identify any rule with:
  5. Port = 80 or 443, or a port range that includes 80/443
  6. Protocol = TCP or Any
  7. Source = Any, 0.0.0.0/0, or Internet
  8. Action = Allow
  9. Delete or restrict these rules to known IP ranges

Remediate via Azure CLI

List all NSGs:
az network nsg list --subscription <subscription-id> --output table

For each NSG, list risky rules:
az network nsg rule list --resource-group <resource-group> --nsg-name <nsg-name> --query "[?contains(destinationPortRange, '80') || contains(destinationPortRange, '443')]"

Delete the exposed rule:
az network nsg rule delete --resource-group <resource-group> --nsg-name <nsg-name> --name <rule-name>

Exceptions
None. HTTP(S) from the Internet must always be evaluated and explicitly restricted.

Further resources

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