Hosting & cloud
How to check your domain’s DNS: tools for websites and email
Website showing the old version or email not arriving? Learn which DNS tools to use, how to read their results and when to ask for help.
Resources
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Understand a technology, follow changes to your services or find a practical explanation. Explore our articles and guides at your own pace.
News and advice
Worth a closer look.
Our latest published articles, with Nuagerie news and advice on the technologies you use every day.
Security & continuity
SSHole: understanding the OpenSSH authentication bypass
Understand SSHole, the OpenSSH and musl authentication bypass: affected configurations, business risks, fixes and why it is not a buffer overflow.
Security & continuity
WordPress: understanding and fixing CVE-2026-119977
WordPress CVE-2026-119977 is being exploited. Understand the risk during updates, patched versions and the checks your business should plan.
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Help Centre
Practical guides
Explanations and practical guidance for using your services. These guides also help you prepare your questions for our team.
Open the Help CentreA few guides to get started.
Domains, backups and encrypted connections: three useful topics for understanding your environment.
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Understand domains, aliases and subdomains
Distinguish domain registration, DNS and hosting, then understand the roles of aliases and subdomains.
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Website, account or server backup: understand the difference
Understand what website, account and server backups cover so you can identify what you need to recover.
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Choose an SSL/TLS certificate for your domain names
Identify the names to cover and distinguish certificates, installation and renewal, without confusing HTTPS with website security.
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