DNS Encryption
Protocols that encrypt DNS queries and responses: DNS over TLS (DoT), DNS over HTTPS (DoH), and DNS over QUIC (DoQ). Covers transport, ports, RFCs, a protocol comparison, and implementation examples for systemd-resolved, …
Encryption
LUKS
Reference for LUKS full-disk and partition encryption with cryptsetup, covering setup, key management, header backup, automated decryption, and recovery.
Restic
Reference guide for restic, an encrypted deduplicating backup program. Covers installation, repository backends, backups, snapshot retention, restores, maintenance, and systemd automation.