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Public web certificate authorities like Let’s Encrypt were not designed to support internal use cases. What you need is a private certificate authority.

We’ve launched an ACME Registration Authority quickstart guide to help you easily automate certificate issuance and renewal to endpoints within walled-off networks. Read up on Registration Authorities and why may need them.

Although SSH certificates are the most secure way to regulate SSH access, they are underutilised. They’re also frequently confused with X.509 (aka TLS) certificates. This article explains what SSH certificates are, why you should be using them, and how they differ from their more popular X.509 counterparts.