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Cyber Security Academy · Lesson

Managing Certificates

Issue, renew, revoke.

The Certificate Lifecycle

Certificates are not set-and-forget. They move through a lifecycle: request, issue, deploy, monitor, renew, and revoke.

Managing this lifecycle well prevents outages and security gaps.

Generating a Key and CSR

Issuance starts with a private key and a Certificate Signing Request (CSR).

openssl req -new -newkey rsa:2048 -nodes \
  -keyout server.key -out server.csr \
  -subj '/CN=app.example.com'

All lessons in this course

  1. Public Key Infrastructure
  2. Certificate Authorities
  3. Certificate Chains
  4. Managing Certificates
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