Linux Server SSH Hardening with Security Keys

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Linux Server SSH Hardening with Security Keys

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In this episode, Lucas and Luna dive into the practical steps for hardening SSH on Linux servers using FIDO2/U2F security keys. They explain why password and even key-based authentication often fall short, then walk through the setup: generating a key backed by a hardware token, configuring sshd to accept only ed25519-sk keys, and disabling password login. The conversation covers real-world friction points like handling multiple servers, backup authentication methods, and the surprising lesson one sysadmin learned after locking themselves out. By the end, listeners have a concrete, implementable security upgrade for their own infrastructure. #Linux #SSH #SecurityKeys #FIDO2 #U2F #Sysadmin #ServerHardening #Ed25519 #Cybersecurity #Authentication #OpenSSH #Technology #FexingoBusiness #BusinessPodcast #ServerAdmin #InfrastructureSecurity #SSHConfig #HardwareToken Keep every episode free: buymeacoffee.com/fexingo

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