Your Firewall Already Saw the Attack: Bringing AI Detection to Network Logs
Endpoint agents are good at seeing what happens on a machine. But a lot of an attack happens between machines: the scan that finds an exposed servic…
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Spoofing WiFi MAC Addresses with a Windows Kernel Driver
1. What a MAC address is A MAC address is six bytes. Convention writes them as hex pairs separated by colons: A4:5E:60:C3:1B:07 The first three byte…
How to Test If Your DDoS Protection Actually Works (Before an Attacker Shows You)
Your CDN dashboard says "attack mitigated". Your origin server says otherwise. One of them is lying, and finding out which one — before a real attac…
[Tailscale] Complete Guide to VPN Connection to Home LAN with Subnet Router
Accessing Your Home LAN from Outside with Tailscale Subnet Router I want to access my home NAS or server while away from home. But VPN setup is diff…
Troubleshooting Video Calls on a VPN: Separate Device, Network, and Meeting-Platform Factors
Adapted from VPN and Video Calls: Realistic Expectations by Mohammad Hesameddin Montazerilisar, published July 9, 2026 and updated September 27, 202…
Network Forensics: Evidence Acquisition (Week 4)
This week, we fovus on the phase of evidence acquisition, focusing on how investigators capture network traffic using physical interception, acquisi…
Addressing Uneven Kubernetes Knowledge: Deepening Critical Areas for Platform Engineering Strength
Bridging the Expertise Gap in Kubernetes and Platform Engineering Achieving mastery in Kubernetes and platform engineering demands more than broad f…
Experienced Developer Seeks Freelance Transition Strategies for Web Apps and Shopify/E-commerce Development
The Freelance Transition Challenge: Bridging the Portfolio Gap For experienced developers eyeing the freelance world, the absence of a dedicated por…
Windows 11 Dropping Wi-Fi on Boot? Blame Your VPN Kill Switch
Every developer has a familiar morning ritual: power on the workstation, grab a fresh cup of coffee, fire up the terminal, and wait for local contai…
Eight Layers Between an Attacker and Your Data. You've Only Configured One.
When you think about network security, you probably picture one thing. A firewall. Something blocking hackers on the other side of a wall. That's on…
Your VPS IP is not on any blocklist. ChatGPT still blocks it.
You ran the checks. AbuseIPDB says zero reports. IPQS gives a fraud score of 1. Scamalytics calls it clean. Everything you were told to check says t…
Show a single Windows application window in any web browser on LAN
Ever needed to show one app window on a tablet without any remote-desktop software? I built WindowStream for exactly that, and Ive just open-sourced…
System Design: How to Build a Networking Library Like Retrofit or OkHttp
System Design: How to Build a Networking Library Like Retrofit or OkHttp Networking is one of the most important infrastructure layers in a modern A…
DoH JSON from the browser: 5 ways Cloudflare and Google differ
Two public resolvers answer DNS queries over HTTPS in JSON: Cloudflare at https://cloudflare-dns.com/dns-query and Google at https://dns.google/reso…
Why firewall migrations frighten the people who have done one
Why firewall migrations frighten the people who have done one Companies replace firewalls for ordinary reasons: the hardware reaches end of support,…
I sampled 330 IPs from 11 VPS providers. Reverse DNS ranged from 0% to 100%, and the blocklist number needs unpacking.
After my last post on cloud provider IP ranges, a few people asked the obvious follow-up: what about the VPS companies you actually buy from? Fair.…
Residential Proxy Detection: Why IP Reputation Alone Is Not Enough
Here’s the awkward question at the center of residential proxy detection: what do you do with an IP address that is both legitimate and being used a…
Deep Dive: Precision Timing Subsystem Modules & IEEE 1588 ArchitectureIn modern distributed computing
Here is a complete, publication-ready Medium article based on the guide to Precision Timing Subsystem Modules and IEEE 1588 architecture.Deep Dive:…
TraceEagle: Construct & Replay Captured Requests, Edit & Resend, Dynamic Value Signing
Request Construction and Replay This article teaches you to modify a captured request and send it again , or to hand-craft a request from scratch an…
The web cares much less about where you are than what you are
The plan was to find out how much of the web is geo-blocked. I had eight servers booting in eight countries and a list of the 500 most popular domai…
How I Bypassed Campus Firewall Port Blocks for Low-Ping Gaming Without a Laggy VPN
Every student who lives in a university hostel or works behind an enterprise firewall knows the exact nightmare: you connect to the campus Wi-Fi, fi…
Свой VLESS-прокси бесплатно одной командой: Xray + XHTTP на Alwaysdata
Мне был нужен свой прокси за границей, но платить за VPS ради него не хотелось. Бесплатные варианты быстро кончились. Oracle Cloud просит иностранну…
What breaks when you self-host a TURN server (coturn — symptom, cause, fix)
The first article in this series was the traps inside the code. The second was the layer underneath — the candidates that lie, the UDP firewall nobo…
WebRTC works on your laptop. Here is what breaks when you put it on a server.
The first article in this series covered the traps inside the code — the Pion v4 API changes, the SSRC rewrites, the renegotiation timing. This one…
The Architecture of Live Video Streaming: How HLS, DASH, and CDNs Actually Work
Live video streaming has become the backbone of modern entertainment infrastructure. Whether a user is watching a football match, joining a video co…
Looking for Contributors: Good First Issues in Network Doctor
I’ve been working on Network Doctor, an open-source Go TUI for diagnosing network problems, and I’d like to get more people involved in the project.…
Why ExitOnForwardFailure=yes does not prove your database is reachable
An SSH tunnel can be listening on your laptop while the service behind it is unavailable. ExitOnForwardFailure=yes is useful, but it does not turn t…
CPU Looks Fine but the VDS Is Slow: A Linux Incident Runbook
A user reports that an application is slow or intermittently unreachable. The monitoring dashboard shows 20% CPU, memory still available, and no obv…
Exploring AWS Transit Gateway
Theebikasri Meets Transit Gateway: Exploring AWS Transit Gateway Introduction Cloud computing has changed the way organizations build and manage the…
Kubernetes: iptables is empty after migrating to Cilium — what to look at next
A Kubernetes Service stops responding. The first move is always the same: get on the node and run iptables-save | grep KUBE-SERVICES to see which Po…