SSH Public Keys are a very common way to control access to systems. They make authentication easy and more secure than using passwords. Unfortunately, there are some issues with the most common ways that Keys are used at scale. Deployment of Keys for each user on a large number of systems can be a headache. This almost encourages Keys to have a long lifespan. Keys are usually only used as a simple Yes or No for authentication. SSH Certificates are a way to improve the Deployment and Policy aspects of Systems Administration. They were introduced several years ago but are still not in wide spread use. This session will explore what SSH Certificates are, how to use them, and some tooling to make using them even easier. [151]


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