Create an Internal Certificate Authority for Private Websites
Fix Chrome NET::ERR_CERT_AUTHORITY_INVALID and Your connection is not private errors by creating an internal CA and using CSR, PEM, and KEY files correctly.
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GPT-5.6 Sol Changes How We Prompt—and How We Write AGENTS.md
Many AGENTS.md files are becoming miniature operating manuals: hundreds of lines of repeated rules, rigid workflows, and reminders that modern coding agents may already…
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Protect a Domain That Does Not Send Email with SPF, DMARC, and Null MX
Registering a new domain does not automatically mean that the domain will send or receive email. It may only host a website, redirect visitors…
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Turning Our Atlanta Vacation Photos into a Video with PowerShell
Over the July 4th holiday, my family and I took a trip to Atlanta. It was one of those vacations that had a little…
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Bulk Create Cloudflare Origin CA Certificates with PowerShell
Cloudflare Origin CA certificates are useful when your origin server only receives traffic through proxied Cloudflare records. They encrypt traffic between Cloudflare and your…
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Test a Cloudflare Global API Key Connection with PowerShell
When you are automating Cloudflare tasks, it is useful to confirm that your credentials work before running a larger script. This small PowerShell script…
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Entering .com in Bucket Names Causes SSL Errors
I ran into a simple Amazon S3 naming mistake that created a much more confusing SSL problem: I added .com to an S3 bucket…
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Transfer S3 Contents Between Buckets with PowerShell
Moving files between Amazon S3 buckets is usually simple when the same AWS account owns everything. It gets a little more annoying when the…
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Configure UFW Firewall on Ubuntu for Web Servers
UFW, short for Uncomplicated Firewall, is a simple firewall management tool for Ubuntu. It is a good fit for web servers because the usual…
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Create an Nginx Default Catch-All Site on Ubuntu
When Nginx receives a request for an unknown domain, it may serve the first enabled site if there is no explicit default server. On…
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