SSL/TLS Certificate Knowledgebase
Knowledge hub of SSL Guides, Manuals, and Resources
Certera.com Knowledge base is a hub of different online resources, helping newbies and professionals understand digital certificates thoroughly. Whether you only want to clear the basics, understand the exact definition, or want to know the purchase, installation, renewal, and management procedure, we provide them all in a single place. Certera got an accurate answer/solution directly from industry experts for every certificate query.
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SSL certificate lifespans are shrinking from 397 days to 47 days, and every sysadmin managing cPanel/WHM servers who still relies on manual installs will face expired certificates, broken sites, and compliance failures. Sectigo’s ACME Certificate solves this, but it does not integrate natively into cPanel or WHM. Sysadmins who do…
Summary When your cluster is handling traffic over an unsecured TLS channel, all traffic sent between your users and services is readable in plain text. If you are running NGINX Ingress or Traefik without automation for certificate management, then you are one expired certificate away from a production outage. Cert-manager…
With a LiteSpeed server without SSL, your website will be identified as “Not Secure” by browsers, and visitors will leave. This is the process of creating, installing, and auto-renewing an ACME SSL Certificate on LiteSpeed (OpenLiteSpeed or LiteSpeed Enterprise) with acme.sh and EAB credentials. If you miss a step, the…
To automatically install/renew an ACME SSL certificate in cPanel/WHM, you must configure an ACME client (such as ACME.sh). It has implications for server operators, web hosting companies, and website owners that rely on commercial certificate authorities for ACME compliance. Without action, your SSL certificate will expire, visitors will see security…
Manual certificate management is one of the leading causes of downtime, regulatory violations, and security deficiencies. Expired TLS certificates can disrupt application functionality, interfere with APIs, and diminish end-user confidence in a brand. The Solution? Automate the entire certificate lifecycle management process using the Automated Certificate Management Environment (ACME) protocol.…
Without a valid SSL certificate, anyone who visits your site is at risk, and your search rankings are severely impacted. If a website owner, DevOps programmer, and sysadmin fail to implement ACME-based SSL automation, then they will have to renew certificates manually every 90 days, which results in outages if…
An ACME SSL certificate is a TLS certificate issued automatically through the ACME protocol, a standard used by free, publicly trusted certificate authorities to handle certificates at scale. “ACME” stands for Automated Certificate Management Environment. It handles the full certificate lifecycle: issuance, validation, installation, and renewal without human intervention. For…
What is a Wildcard DNS Record? A wildcard DNS record is a DNS record that is configured for matching any requested subdomains that are not known. It is more effective than setting up several distinct DNS records for various subdomains because, as the name suggests, a wildcard DNS record will…
When you digitally sign a document, you can be sure that it is authentic, intact, and non-repudiable. When you sign a file with a trusted certificate, the recipient can verify that the document has not changed and it truly comes from you. OpenOffice and LibreOffice can digitally sign documents using…
Digital signatures have become a critical component of secure document workflows. They prove authenticity, integrity, and non-repudiation — showing that a file has not been altered, and that it came from the claimed source. In this guide, you will learn how to add both visible and invisible digital signatures to…
