Linux and FreeBSD Security Tips: Practical Security Techniques for Hardening Linux and FreeBSD Systems in Modern Production Environments

Mastering FreeBSD and OpenBSD Security (O'Reilly Ser.)

FREEBSD 15 PKGBASE: REVOLUTIONARY PACKAGE-BASED SYSTEM MANAGEMENT: Migrate from freebsd-update to Modern pkg Workflow with Fine-Grained Installations and Quantum-Resistant Security

Mastering FreeBSD 15 Pkgbase: Optimizing Package Management, Streamlining Installation Processes, and Strengthening Security

Linux Server Security (O'Reilly Ser.)