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Scenario #261
Security
Kubernetes v1.24, GKE
Misconfigured Ingress Controller Exposing Internal Services
An Ingress controller was misconfigured, inadvertently exposing internal services to the public internet.
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What Happened
The default configuration of the Ingress controller allowed all incoming traffic without proper authentication or IP restrictions. This oversight exposed internal services, making them accessible to unauthorized users.
Diagnosis Steps
- 1Reviewed Ingress controller configurations.
- 2Identified lack of authentication mechanisms and IP whitelisting.
- 3Detected unauthorized access attempts in logs.
Root Cause
Default Ingress controller settings lacked necessary security configurations.
Fix/Workaround
• Implemented IP whitelisting to restrict access.
• Enabled authentication mechanisms for sensitive services.
• Regularly audited Ingress configurations for security compliance.Lessons Learned
Always review and harden default configurations of Ingress controllers to prevent unintended exposure.
How to Avoid
- 1Utilize security best practices when configuring Ingress controllers.
- 2Regularly audit and update configurations to align with security standards.