Certificate-Based SSH: Deep Dive
Technical deep dive into replacing SSH keys with certificates. Learn the architecture, implementation patterns, and security benefits of modern SSH certificate-based authentication.
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Watch NowOverview
SSH keys have been the standard for server access for decades, but they come with significant security and operational challenges. Long-lived static keys are difficult to rotate, easy to lose track of, and create sprawling attack surfaces.
This technical webinar explores how SSH certificates solve these problems by providing short-lived, automatically rotated credentials that can be issued on-demand with fine-grained permissions. You'll learn the OpenSSH certificate protocol, implementation patterns, and real-world deployment strategies.
What You'll Learn
- How OpenSSH certificates work under the hood
- Setting up a certificate authority for SSH
- Implementing automated certificate issuance and rotation
- Principal and extension-based access controls
- Migration strategies from SSH keys to certificates
- Troubleshooting common certificate deployment issues
Key Topics Covered
- •OpenSSH certificate format and protocol internals
- •User certificates vs. host certificates
- •Certificate principals and validity periods
- •Critical options: force-command, source-address, port-forwarding
- •Configuring sshd_config for certificate authentication
- •Certificate authority trust distribution
- •Automated certificate renewal workflows
- •Certificate revocation and emergency response
- •Integration with identity providers (OIDC, SAML)
- •Performance and scalability considerations
Featured Speaker
Marcus Rodriguez
Senior Infrastructure Engineer
Marcus is a systems engineering expert with deep knowledge of SSH protocols and PKI infrastructure. He has implemented certificate-based SSH at scale for major tech companies.
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