Risk Level: High
Cloud Entity: Network security group
CloudGuard Rule ID: D9.AZU.NET.22
Covered by Spectral: Yes
Category: Networking & Content Delivery

GSL LOGIC

NetworkSecurityGroup should not have outboundSecurityRules contain [ protocol = 'All' and destinationAddressPrefixes contain [ '0.0.0.0/0' ] and action='ALLOW']

REMEDIATION

Azure Console:

Navigate to the 'All services'
Navigate to the Networking, and select 'Network security groups'
Select the Network security group to be modified
Under Settings, select 'Outbound security rules'
Select the rule to be modified and edit it to allow only specific IP addresses or protocols

Network security group

You can filter network traffic to and from Azure resources in an Azure virtual network with a network security group. A network security group contains security rules that allow or deny inbound network traffic to, or outbound network traffic from, several types of Azure resources.

Compliance Frameworks

AZU PCI-DSS 4.0
Azure CloudGuard Best Practices
Azure CloudGuard CheckUp
Azure HITRUST v9.5.0
Azure NIST 800-53 Rev 5
CloudGuard Azure All Rules Ruleset