Domaines & DNS
Comment fonctionnent vraiment le DNS, les domaines, les certificats et la supervision — et par où commencer quand ça casse. Pas d’argumentaire commercial, pas de listicles.
Domaines & DNS21 août 2026 · 6 min de lecture
What is DNSSEC and should you enable it?
DNSSEC stops attackers from forging DNS answers, but it's opt-in everywhere and easy to misconfigure. Here's the threat it solves, the trade-offs, and when to turn it on.
Domaines & DNS14 août 2026 · 4 min de lecture
Why infrastructure inventory is important (and what to track)
An unmanaged domain, a forgotten server, or an expired certificate can take down production. Here's why infrastructure inventory is the foundation of reliable, secure operations.
Domaines & DNS31 juil. 2026 · 6 min de lecture
DNS propagation explained: why changes take time and how to check
DNS propagation isn't a global sync — it's TTL-based caching. Here's what actually controls the delay and how to check a change safely.
Domaines & DNS29 juil. 2026 · 5 min de lecture
Cloudflare DNS not updating: causes and how to fix it
Changed a DNS record in Cloudflare and nothing seems different? Here's how to tell a caching delay apart from a real config problem, and how to fix each.
Domaines & DNS27 juil. 2026 · 7 min de lecture
20 DNS security checks every domain should pass
A practical DNS security checklist covering DNSSEC, CAA, SPF/DKIM/DMARC, zone transfers and nameserver hygiene — with commands you can run today.
Domaines & DNS19 juil. 2026 · 5 min de lecture
How to catch an expiring domain: drop-catching & backorders explained
What really happens when a domain expires, how drop-catching works, and when to use a backorder vs your own registrar — a practical guide to catching the names you want.
Domaines & DNS8 juil. 2026 · 4 min de lecture
Complete DNS record guide: A, AAAA, CNAME, MX, TXT, NS & CAA
A practitioner's reference to the core DNS record types — A, AAAA, CNAME, MX, TXT, NS and CAA — with a real example and the standards behind each.
Domaines & DNS2 juil. 2026 · 5 min de lecture
How DNS resolution works: the root-to-authoritative walk explained
A practical walkthrough of DNS resolution: recursive vs authoritative resolvers, the root→TLD→authoritative query path, and how caching affects speed.
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