Luke Hebert
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Welcome to the articles section, where business, technology, and everyday problem-solving meet. You’ll find practical how-tos, troubleshooting notes from the trenches, and the occasional take on whatever’s happening in the world. Some posts will save you time, some will spark ideas, and a few will just be me thinking out loud. Grab a coffee and dig in.

Crontab Log January 24, 2022

Crontab Log

Find where cron logs live on your Linux system and learn how to read them to confirm scheduled jobs actually ran.
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Decode a Certificate CSR January 24, 2022

Decode a Certificate CSR

Quick openssl commands to inspect a Certificate Signing Request and an issued X.509 certificate in human-readable form.
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Disable ModSecurity on a Domain via .htaccess January 24, 2022

Disable ModSecurity on a Domain via .htaccess

Learn how to turn off ModSecurity for a specific domain or path using a single directive in your .htaccess file. This is useful when a legitimate request is being blocked by the WAF rules.
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DKIM Verification: Both Must Be Set to On January 24, 2022

DKIM Verification: Both Must Be Set to On

Exim offers two DKIM-related toggles that work together to validate and enforce sender signatures. Setting both to On ensures your mail server actually checks incoming DKIM records and rejects messages that fail validation.
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DNS Amplification Attack January 24, 2022

DNS Amplification Attack

A DNS amplification attack floods a victim with forged responses by exploiting open resolvers. This post walks through iptables rules and BIND hardening steps to block the attack vector.
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DNS Resolution and Zone Files January 24, 2022

DNS Resolution and Zone Files

A practical walkthrough of how DNS resolution works, from the hierarchical name space down to the iterative query process. Includes common zone file syntax mistakes and how to avoid them.
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