Tag: networking
All the articles with the tag "networking".
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Your VPN Is a Flat Network You Dial Into. That Is the Whole Problem.
A VPN authenticates you once and then drops you onto the internal network with reach to everything. That is not access control. It is a flat network with a login screen, and I have written before about what flat networks cost.
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How a Packet Actually Reaches Your Pod
A visual walk through every hop a request takes from load balancer to pod, why the service is a fiction, and why so many cluster network failures are silent.
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It Is Always DNS. This Time It Was Hiding in the Defaults.
CoreDNS CPU was pegged and name resolution failed at random across the cluster. Nothing in the app changed. The load came from a default nobody chose, quietly turning one lookup into five.
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The Day We Stopped Trusting a Flat Datacenter Network
How we rebuilt a Brazilian hosting datacenter from a flat unmanaged network into a segmented one and what that actually changed