AI & ML

The AWS network inventory, now also a CSV you can filter

What the VPC Atlas inventory holds, the four formats it comes in, and why I made the CSV one flat row per resource. The diagram is the picture, the…

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…

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…

ARP! Tell your network to explain itself

NAT Gateway vs VPC Endpoints: Which Path Should Your Private AWS Traffic Take?

Private subnets are one of the first good habits you learn in AWS. Put your EC2 instances, containers and databases where the internet cannot start…

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…

Wi-Fi or VPN sign-in failing after a Windows update? What to check

When a user says their Wi-Fi or VPN stopped working after an update, there are quite a few things to check. Drivers, connection profiles, credential…

How to find the closed port that stops an EC2 web page loading, and lock down SSH

You launched an Amazon EC2 instance, installed a web server, and typed its public address into a browser. The tab spins and then times out. Nothing…

Debugging nighttime PoE camera restarts: power, cable and recording checks

A PoE camera can work during the day and restart when its lighting activates. Power is one possible cause; a frozen live view alone does not prove a…

Works on desktop, fails on phones: the post-quantum TLS bug hiding in your network card

Modern browsers now send a larger TLS hello. On some Windows servers, a receive-offload bug in the network card silently breaks about half of those…

Clean Shutdown and Restart Order for a Small Office in a Texas Grid Emergency

A small office survives a Texas grid emergency by shutting down cleanly before the power drops and restarting in dependency order after it returns.…

MiBee Steward v0.7.3: schema break, a Rust agent, and four bugs only the field could find

The agent went quiet for 19 minutes and systemd stayed green On 2026-10-12 I rebuilt the database of my own main center. Nineteen minutes later I no…

SQL Server for Genetec Security Center

When a Security Center system slows down, the first suspect is usually the Archiver and the second is the network. In my experience the database is…

"Connected, But No Internet": Check for a 169.254 Address First

A user calls the help desk: "My Wi-Fi says connected, but nothing loads." Before restarting the router or reinstalling network drivers, spend 30 sec…

How We Built a 200-User Office Network in Three Weeks

A financial firm was moving into a full floor in Midtown Manhattan. More than 200 people would sit down on opening day and expect the wired ports, t…

CIDR and Subnet Mask

Hello All, I would like to share something I learned while preparing for the AWS Certified Advanced Networking - Specialty (ANS-C01) certification.…

Who Decides When a Windows Application Needs the Internet?

Your computer may be communicating with remote systems even when you are doing nothing that requires the internet. The applications may be legitimat…

The hardest part of my NAS dashboard was getting traffic to reach it

I built NAS Device Flow to choose which devices on my home Wi-Fi use rule-based proxy routing. The daily interaction is a switch beside each device.…

Same proxy IP, lost login: which session expired?

A browser automation job can keep the same proxy exit IP and still lose its login. Before changing the proxy settings, separate two kinds of state:…

What Is DNS Tunneling? How Can Hackers Hide Data Inside DNS Queries?

Every time a browser visits a website, a DNS query leaves the machine. The query contains a domain name. That name resolves to an address. The conne…

[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…

How to subnet for the CCNA without memorizing a chart

Subnetting is the one CCNA topic that shows up everywhere: in its own questions, hidden inside routing questions, and in the lab tasks where you hav…

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…

Why Wi-Fi 7 Needs a 2.5G Port: Seeing the Wired Link Behind the Wireless Through a NAS Transfer

Wi-Fi 7 devices come with a 2.5G Ethernet port for a reason: once the wireless side can push much more throughput, the old gigabit wired link stops…

Groq returned the same 403 for my real key, a fake key, and no key

I was running a small Node benchmark script against a few hosted LLM APIs from a Windows machine. One provider failed with a bare fetch failed , whi…

When Submarine Cables Go Dark: Understanding and Preparing for the Risks of Taiwan's International Internet Disconnection

SOCKS5 vs HTTP proxy: DNS, speed, security, which to use

Originally published on proxymint . SOCKS5 vs HTTP proxy compared: what each carries, where DNS resolves (socks5 vs socks5h), speed, auth, client su…

The internet's root key rotates in five days. Your resolver may not be ready.

On October 11 — five days from this post — the most trusted key on the internet changes hands. KSK-2017, the key-signing key that has authenticated…

How do you guys market yourself

I wish to know from all the developers in here, how do you market yourself? Like, what techniques do you use to bring actual visibility to yourself…

Install Mininet on Ubuntu for Network Simulation: 3 Methods That Actually Work

Learning computer networking is ten times easier when you can build a topology and ping it yourself. The problem: most students do not own a stack o…