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CloudSploit

GOOGLE / Kubernetes / Master Authorized Network

Quick Info
Plugin Title Master Authorized Network
Cloud GOOGLE
Category Kubernetes
Description Ensures master authorized networks is set to enabled on Kubernetes clusters
More Info Authorized networks are a way of specifying a restricted range of IP addresses that are permitted to access your container clusters Kubernetes master endpoint.
GOOGLE Link https://cloud.google.com/kubernetes-engine/docs/how-to/authorized-networks
Recommended Action Enable master authorized networks on all clusters.

Detailed Remediation Steps

  1. Log into the Google Cloud Platform Console.
  2. Scroll down the left navigation panel and choose the "Kubernetes Engine" option under the "Compute" and select the "Clusters."
  3. On the "Kubernetes clusters" page , click on the "Name" as a link option to select the cluster.
  4. On the "Clusters" page, click on the "Edit" button at the top.
  5. Scroll down the "Clusters - Edit" page and check whether "Master authorised networks" is enabled or disabled. If it's set to disabled then it's not as per the best recommended method to authenticate.
  6. Repeat steps number 2 - 5 to verify other "Clusters" in the account.
  7. Navigate to the "Kubernetes Engine" option under the "Compute", choose the "Clusters" and click on the "Edit" button at the top.
  8. On the "Clusters - Edit" page, scroll down and choose the "Enabled" option from the dropdown menu next to "Master authorised networks."
  9. Click on the "Save" button to make the changes.
  10. Repeat steps number 7 - 9 to enable master authorized networks on all clusters.