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Kubernetes DNS was failing 33% of the time. CoreDNS was fine.

Kubernetes DNS was failing 33% of the time. CoreDNS was fine.

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5 min read
5 Common Subnetting Mistakes That Break Real Networks

5 Common Subnetting Mistakes That Break Real Networks

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5 min read
Why Does a Webpage Feel Instant When the Server Is Thousands of Miles Away?

Why Does a Webpage Feel Instant When the Server Is Thousands of Miles Away?

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5 min read
Testing the claim: a degraded-link matrix as a required CI gate

Testing the claim: a degraded-link matrix as a required CI gate

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5 min read
Idle load balancers: the ~$16/month each you forgot to delete"

Idle load balancers: the ~$16/month each you forgot to delete"

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2 min read
How to find a device by its MAC address

How to find a device by its MAC address

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3 min read
DNS Troubleshooting with dig: The Commands DevOps Engineers Actually Need

DNS Troubleshooting with dig: The Commands DevOps Engineers Actually Need

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4 min read
My Wi-Fi router

My Wi-Fi router

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2 min read
How to design a secure network for a growing business (without gold-plating it)

How to design a secure network for a growing business (without gold-plating it)

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3 min read
AWS Networking Decision Guide: Transit Gateway vs VPC Peering vs PrivateLink vs VPC Lattice vs Cloud WAN

AWS Networking Decision Guide: Transit Gateway vs VPC Peering vs PrivateLink vs VPC Lattice vs Cloud WAN

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6 min read
A new NetworkManager property broke a decade of headless WiFi scripts

A new NetworkManager property broke a decade of headless WiFi scripts

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5 min read
UFW and WireGuard: the tunnel is up and nothing goes through

UFW and WireGuard: the tunnel is up and nothing goes through

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3 min read
Who Is on My Wi-Fi? See Every Device and Spot Intruders

Who Is on My Wi-Fi? See Every Device and Spot Intruders

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5 min read
Day 29: A Pull Request Needs Two People, and Peering Needs Two Routes

Day 29: A Pull Request Needs Two People, and Peering Needs Two Routes

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5 min read
What 802.1X Actually Proves, and the Checkbox That Decides It

What 802.1X Actually Proves, and the Checkbox That Decides It

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6 min read
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