How I Built a Full ISP Network in a Lab: BGP Multihoming with MikroTik
I built a working ISP edge in a lab: MikroTik BGP multihoming with two transits, two IXPs, and BGP customers — every command and output is real.
Automating JNLP Downloads with PowerShell Using Session Cookies
Automate authenticated JNLP downloads in PowerShell using a WebRequestSession, manual cookie handling, URL-encoding, and Invoke-WebRequest with browser headers.
Complete Guide to Downloading Files with PowerShell
Download files with PowerShell’s Invoke-WebRequest, from basic saves to custom headers, cookie strings, and WebRequestSession-based login for authenticated resources.
The Complete Guide to Installing StorCLI on Linux and Windows
Install Broadcom’s StorCLI for LSI MegaRAID controllers on Linux and Windows via .deb, RPM, or manual binary, with symlink setup and verification commands.
SNMP Exporter Installation Guide
Install the Prometheus SNMP Exporter on Linux via binary and a systemd service, creating a dedicated user, deploying snmp.yml, and exposing metrics on port 9116.
Setting Up Stripe SSO with Auth0 (SAML) — Complete Guide (Account-Level)
Configure Stripe SSO with Auth0 as the SAML identity provider, covering domain verification, SAML2 settings, and injecting Stripe-Role attributes via Auth0 Actions.
Enable WordPress SSO with Auth0 using miniOrange (SAML)
Enable WordPress SSO with Auth0 as the SAML IdP using the miniOrange SAML SP plugin, covering SP metadata, Auth0 SAML2 config, metadata exchange, and role mapping.
Windows installation guide for Codex CLI
Install OpenAI’s Codex CLI on Windows 10 and 11 via WSL2 or a native setup, covering Node.js prerequisites, sandbox limitations, and the GPT-5.2-Codex model.
Authenticating Codex CLI on a Remote Linux Server from Windows
Fix Codex CLI OAuth login failures on a remote Linux server using SSH port forwarding (ssh -L 1455) to tunnel the localhost:1455 callback back to Windows.
Comprehensive Guide to Installing Codex CLI on Linux
Install OpenAI’s Codex CLI on Ubuntu Linux using npm or Homebrew, covering Node.js and Git prerequisites, NVM setup, and verifying the installation.
How to Access GitHub from a Linux Server Using SSH Keys (Step-by-Step Guide)
Set up SSH key authentication for GitHub on a Linux server with ssh-keygen (ed25519), the ssh-agent, and an ssh -T test, plus deploy-key best practices.
The Ultimate Guide to Undoing Git Commits
Undo Git commits with the right tool: git reset (soft, mixed, hard), git revert for pushed changes, and commit –amend, with HEAD~ and HEAD^ notation explained.
Two Submit Buttons in One Form — How to Know Which Was Clicked
Detect which submit button was clicked in a form by giving buttons the same name with unique values, with server-side examples in PHP, Flask, Express, and Rails.