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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
Day 40: Curl's 000 Says Where to Look, and Blackhole Says Exactly What Broke

Day 40: Curl's 000 Says Where to Look, and Blackhole Says Exactly What Broke

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5 min read
Kubernetes - Day - 06 - Network Inside Docker

Kubernetes - Day - 06 - Network Inside Docker

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3 min read
The packets left. Nothing came back.

The packets left. Nothing came back.

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4 min read
How I Bypassed Campus Firewall Port Blocks for Low-Ping Gaming Without a Laggy VPN

How I Bypassed Campus Firewall Port Blocks for Low-Ping Gaming Without a Laggy VPN

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4 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
What Is DNS Rebinding? How Can a Domain Point to Different IP Addresses?

What Is DNS Rebinding? How Can a Domain Point to Different IP Addresses?

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6 min read
Where the Packet Goes

Where the Packet Goes

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5 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
Your Browser Is Behind a Router. Let's See What It Actually Knows.

Your Browser Is Behind a Router. Let's See What It Actually Knows.

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8 min read
# Tracing a URL to a Rendered Page, and the Two Stories I Almost Told at Once

# Tracing a URL to a Rendered Page, and the Two Stories I Almost Told at Once

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4 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
I Built a Network Security Diagnostic Tool With Python’s Standard Library Only

I Built a Network Security Diagnostic Tool With Python’s Standard Library Only

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6 min read
The CoreDNS Black Hole: how one dead DNS pod broke our API gateway

The CoreDNS Black Hole: how one dead DNS pod broke our API gateway

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10 min read
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