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Scenario #238
Security
K8s v1.19, On-Premise
Exposed Internal Services Due to Misconfigured Load Balancer
Internal services were inadvertently exposed to the public due to incorrect load balancer configurations, leading to potential security risks.
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What Happened
A load balancer was misconfigured, exposing internal services to the public internet without proper access controls, increasing the risk of unauthorized access.
Diagnosis Steps
- 1Reviewed the load balancer configuration and found that internal services were exposed to external traffic.
- 2Identified that no authentication or access control was in place for the exposed services.
Root Cause
Incorrect load balancer configuration exposed internal services to the internet.
Fix/Workaround
• Reconfigured the load balancer to restrict access to internal services, ensuring that only authorized users or services could connect.
• Implemented authentication and IP whitelisting to secure the exposed services.Lessons Learned
Always secure internal services exposed via load balancers by applying strict access controls and authentication.
How to Avoid
- 1Review and verify load balancer configurations regularly to ensure no unintended exposure.
- 2Implement network policies and access controls to secure internal services.