MFA for SSH: YubiKey, PAM‑FIDO2, Jump‑Hosts and pragmatic fallback strategies for admin access
How to securely operate SSH access for administrators with FIDO2 tokens (e.g., YubiKey), PAM integration, and bastion/jump-host architectures —…
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Secure Remote-Access Architecture: WireGuard, VPN-HA, SSH-Bastion-Design and Access Logging in Practice
How to secure remote access resiliently: correctly segment WireGuard, plan VPN-HA without side effects, build an SSH bastion with clear control…