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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
Kubernetes Networking [Level-8: kube-proxy / iptables / IPVS / eBPF]

Kubernetes Networking [Level-8: kube-proxy / iptables / IPVS / eBPF]

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15 min read
Introducing RegionCheck: Test Endpoints from AWS, Azure, and Google Cloud Regions

Introducing RegionCheck: Test Endpoints from AWS, Azure, and Google Cloud Regions

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2 min read
I wrote a Post-Quantum SSH server in Rust — from scratch, in the kernel

I wrote a Post-Quantum SSH server in Rust — from scratch, in the kernel

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4 min read
Day 8 — Understanding Linux From the Ground Up: The System Every SOC Analyst Must Know

Day 8 — Understanding Linux From the Ground Up: The System Every SOC Analyst Must Know

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7 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
What Is My IP Address? IPv4 vs IPv6 Explained for DevelopersPublished

What Is My IP Address? IPv4 vs IPv6 Explained for DevelopersPublished

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4 min read
Designing a Custom Application-Layer Sliding Window Protocol for High-Latency Networks

Designing a Custom Application-Layer Sliding Window Protocol for High-Latency Networks

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4 min read
Your URL-fetching service is an SSRF engine - here's the two-layer guard we shipped

Your URL-fetching service is an SSRF engine - here's the two-layer guard we shipped

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4 min read
How Two Processes Fighting Over One WireGuard Interface Broke Our NetBird Mesh in Kubernetes

How Two Processes Fighting Over One WireGuard Interface Broke Our NetBird Mesh in Kubernetes

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4 min read
Network Protocols — ARP, FTP, SMTP, HTTP, HTTPS, DNS and DHCP

Network Protocols — ARP, FTP, SMTP, HTTP, HTTPS, DNS and DHCP

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5 min read
# The Journey of a Request: How NGINX Routes Traffic Between Docker Containers in a Modern Web Application

# The Journey of a Request: How NGINX Routes Traffic Between Docker Containers in a Modern Web Application

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4 min read
Routers — How ARP and Routing Work Together

Routers — How ARP and Routing Work Together

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5 min read
Switches Explained — How Devices Communicate Within a Network

Switches Explained — How Devices Communicate Within a Network

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5 min read
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