https://tierneydynamics.com/blog/ Articles from Tierney Dynamics on hosting, Windows-to-Linux migrations, ColdFusion, and keeping small-business websites running. en-us Mon, 02 Nov 2026 18:10:00 +0000 chris.tierney@tierneydynamics.com (Chris Tierney) chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/ethernet-past-100-meters.html https://tierneydynamics.com/blog/ethernet-past-100-meters.html Mon, 02 Nov 2026 00:00:00 +0000 The 100-meter Ethernet limit is gospel, but how much margin is really in it? John Huntington at ControlGeek cut a spool of Cat 5e down until it worked. Here's what he found. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/coldfusion-update-26-rereplace-bug.html https://tierneydynamics.com/blog/coldfusion-update-26-rereplace-bug.html Sun, 01 Nov 2026 00:00:00 +0000 ColdFusion 2023 Update 26 and 2025 Update 14 broke ReReplace case escapes like \U\0, turning Test into UTest. Here is the symptom, Adobe's hotfix jar, and how to install it. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/coldfusion-standard-vs-enterprise.html https://tierneydynamics.com/blog/coldfusion-standard-vs-enterprise.html Fri, 30 Oct 2026 00:00:00 +0000 Considering ColdFusion Standard to save money? Here is what changes: throttled PDF tags, no multi-instance, 2-core limits, and Oracle drivers. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/secure-self-hosted-documentation-wiki.html https://tierneydynamics.com/blog/secure-self-hosted-documentation-wiki.html Wed, 28 Oct 2026 00:00:00 +0000 How Tierney Dynamics designs a private, zero-trust documentation wiki on AWS and Cloudflare for small IT teams, MSPs, and growing businesses: the need, the architecture, the rollout plan, and the obstacles to plan for. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/moving-to-cf2025-cheers-and-challenges.html https://tierneydynamics.com/blog/moving-to-cf2025-cheers-and-challenges.html Tue, 27 Oct 2026 00:00:00 +0000 Charlie Arehart’s Mid-Michigan CFUG talk on moving to ColdFusion 2025 — cheers, challenges, and migration tools — plus his AI-generated timestamp summary. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/five-website-fixes-search-and-ai.html https://tierneydynamics.com/blog/five-website-fixes-search-and-ai.html Thu, 22 Oct 2026 00:00:00 +0000 Search engines and AI answer tools need the same basics: crawlable URLs, structured data, clear identity, and topical links. Here are five high-impact fixes for any website. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/php2shell-what-website-owners-need-to-do-now.html https://tierneydynamics.com/blog/php2shell-what-website-owners-need-to-do-now.html Wed, 21 Oct 2026 00:00:00 +0000 Two critical PHP flaws nicknamed php2shell were disclosed October 21, 2026. Any PHP site is at risk until PHP is updated. Here is what website owners should do now. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/coldfusion-september-2026-updates.html https://tierneydynamics.com/blog/coldfusion-september-2026-updates.html Mon, 12 Oct 2026 00:00:00 +0000 Adobe's September ColdFusion updates fixed six critical vulnerabilities, and since then admins have reported servers that will not start, failing XML imports and missing packages. Here is what changed, what has broken, and how to fix it. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/local-aws-mcp-server-multiple-accounts.html https://tierneydynamics.com/blog/local-aws-mcp-server-multiple-accounts.html Thu, 08 Oct 2026 00:00:00 +0000 Reconnecting the AWS MCP connector every time we switched AWS accounts got old fast. Running the AWS MCP Server locally in Claude Desktop with several CLI profiles fixed it. Here is the full setup. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/when-a-case-insensitive-disk-broke-coldfusion-administrator.html https://tierneydynamics.com/blog/when-a-case-insensitive-disk-broke-coldfusion-administrator.html Sat, 03 Oct 2026 00:00:00 +0000 Half of ColdFusion Administrator started returning a generic error on a new Linux server, and the cause was a disk option we had chosen on purpose: case-insensitive file names. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/s3-staging-for-server-migrations.html https://tierneydynamics.com/blog/s3-staging-for-server-migrations.html Fri, 02 Oct 2026 00:00:00 +0000 Moving 14 GB and 42,000 files off an aging Windows server did not need a VPN, an open firewall port, or a new product. It needed a private S3 bucket and two small jobs. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/post-quantum-certificates.html https://tierneydynamics.com/blog/post-quantum-certificates.html Thu, 01 Oct 2026 00:00:00 +0000 Post-quantum certificates have to stay small enough for a TLS handshake. Cloudflare is targeting the first production Merkle Tree Certificates for early 2027. Here's what that changes, and what to do now. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/utf-8-bom-wordpress-rest-api.html https://tierneydynamics.com/blog/utf-8-bom-wordpress-rest-api.html Wed, 30 Sep 2026 00:00:00 +0000 Three invisible UTF-8 bytes in PHP files corrupted every JSON response on a WordPress Multisite. How we found the BOM, and how to detect, strip, and prevent it. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/case-sensitivity-windows-to-linux.html https://tierneydynamics.com/blog/case-sensitivity-windows-to-linux.html Wed, 30 Sep 2026 00:00:00 +0000 Moving a website from Windows to Linux can lower hosting costs, but capital letters in file names can break pages, images, and links. Here is how to find those problems before customers do. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/fw-1-has-a-new-name-ziggy-mvc.html https://tierneydynamics.com/blog/fw-1-has-a-new-name-ziggy-mvc.html Thu, 06 Aug 2026 02:16:11 +0000 I missed this year's CF Summit in Vegas, but FW/1 has been my favorite simple ColdFusion framework for years, so I wanted to pass the news along. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/dealing-with-coldfusion-sessions-and-bots.html https://tierneydynamics.com/blog/dealing-with-coldfusion-sessions-and-bots.html Mon, 30 Mar 2026 20:45:56 +0000 ColdFusion sites that keep session data can run out of memory when crawlers create thousands of empty sessions. Here is how to spot and clean them up. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/the-clock-is-ticking-why-tls-ssl-certificate-lifespans-are-shrinking-in-2026.html https://tierneydynamics.com/blog/the-clock-is-ticking-why-tls-ssl-certificate-lifespans-are-shrinking-in-2026.html Thu, 05 Feb 2026 00:09:37 +0000 TLS certificate lifetimes are shrinking through 2029. Manual renewals will not scale — here is the timeline and what to automate now. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/coldfusion-remote-file-attack-using-admin-api.html https://tierneydynamics.com/blog/coldfusion-remote-file-attack-using-admin-api.html Fri, 02 Jan 2026 23:42:22 +0000 I recently came across an older ColdFusion 2018, update 12, server that was many patches behind. I can't go into details on this server's origin. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/troubleshooting-high-sql-server-cpu-on-amazon-rds.html https://tierneydynamics.com/blog/troubleshooting-high-sql-server-cpu-on-amazon-rds.html Wed, 20 Aug 2025 01:31:35 +0000 Today's scenario consists of a db.m6i.2xlarge Amazon RDS instance running Microsoft SQL Server Web Edition. A newer chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/is-it-cheaper-to-run-windows-servers-on-azure-than-aws.html https://tierneydynamics.com/blog/is-it-cheaper-to-run-windows-servers-on-azure-than-aws.html Thu, 14 Aug 2025 23:01:11 +0000 Spoiler alert; the answer is yes. And by quite a bit. But with reservations. You have to look at the whole picture. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/removing-emails-from-amazon-ses-account-level-suppression-list-using-cloudshell.html https://tierneydynamics.com/blog/removing-emails-from-amazon-ses-account-level-suppression-list-using-cloudshell.html Tue, 12 Aug 2025 17:04:08 +0000 How to remove addresses from the Amazon SES account-level suppression list using CloudShell and the AWS CLI when a mailbox should receive mail again. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/always-encrypt-aws-ec2-instances.html https://tierneydynamics.com/blog/always-encrypt-aws-ec2-instances.html Wed, 06 Aug 2025 20:31:24 +0000 Risk questionnaires ask whether data is encrypted at rest. Here is why every AWS EC2 volume should be encrypted, and how to get there without downtime surprises. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/installing-docker-w-compose-on-amazon-linux-2023.html https://tierneydynamics.com/blog/installing-docker-w-compose-on-amazon-linux-2023.html Fri, 18 Jul 2025 02:09:59 +0000 How to install Docker Engine with the Compose v2 plugin on Amazon Linux 2023 without following the CentOS or Fedora paths on Docker's site. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/cfscript-cf-functions-are-custom-tags.html https://tierneydynamics.com/blog/cfscript-cf-functions-are-custom-tags.html Mon, 24 Jul 2023 18:31:40 +0000 Early cfscript tag functions in ColdFusion are implemented as CFCs and custom tags. Here is what that means for how cfquery, cfhttp, and friends actually run. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/adobe-coldfusion-log-verboseness.html https://tierneydynamics.com/blog/adobe-coldfusion-log-verboseness.html Tue, 27 Jun 2023 20:59:56 +0000 ColdFusion logs are essential, but default rotation and verbosity can fill disks fast. Here is how to keep useful logs without drowning in noise. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/be-aware-of-mura-cms-security-issues.html https://tierneydynamics.com/blog/be-aware-of-mura-cms-security-issues.html Thu, 06 Apr 2023 18:03:50 +0000 Mura CMS moved from open source to a closed-source cloud product. If you still run older Mura, here are the security issues to take seriously. chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/purchasing-adobe-coldfusion.html https://tierneydynamics.com/blog/purchasing-adobe-coldfusion.html Mon, 13 Feb 2023 23:05:59 +0000 Are you in the market or considering purchasing Adobe ColdFusion's full or upgrade license? chris.tierney@tierneydynamics.com (Chris Tierney) https://tierneydynamics.com/blog/estimating-aws-ec2-ebs-snapshots.html https://tierneydynamics.com/blog/estimating-aws-ec2-ebs-snapshots.html Mon, 10 Dec 2018 22:06:32 +0000 Estimating and understanding what AWS EC2 EBS Snapshots will cost you can be more difficult than you may think. chris.tierney@tierneydynamics.com (Chris Tierney)