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Showing posts with label Linux. Show all posts
Showing posts with label Linux. Show all posts
Tuesday, April 14, 2026

Certificate Changes in 2026: My Full Linux Admin Blog Series

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A complete series covering TLS basics, DigiCert trust changes, certificate lifetime reductions, and automation for Linux users. Intro...

How to Automate TLS Certificate Renewals on Linux Before Short Lifetimes Become a Problem

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Part 5 of 6 Shorter TLS certificate lifetimes mean manual renewal is no longer enough. Here is how Linux admins can automate renewals...

Are TLS Certificate Lifetimes Really Dropping to One Month? Here Is the Real Timeline

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Part 4 of 6 People keep saying certificate validity is dropping from one year to one month. Here is the real public TLS timeline and ...

How to Check If Your Linux Server Uses an Affected DigiCert Certificate Chain

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Part 3 of 6 A practical Linux guide to inspecting TLS certificate chains with OpenSSL before DigiCert trust changes cause browser err...

TLS Certificates Explained Simply: A Beginner-Friendly Guide for Linux Users

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Part 1 of 6 A simple guide to TLS certificates, certificate chains, root CAs, and intermediates for Linux users, website owners, and ...
Monday, October 23, 2023

DHCP deleting custom entries in /etc/resolv.conf file

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  If you are working on cloud environments like AWS, OCI you might have come across a requirement where you need to add cust...
Wednesday, October 18, 2023

Intrusion Detection and Integrity Checks with AIDE in Linux

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  Advanced Intrusion Detection Environment (AIDE) is an open-source utility designed to monitor and protect the integrity of files on a Lin...