Categories: Fundamentals OpenBSD
Since 1995, OpenBSD has been developed around the principle of 'secure by default'. Continuous code audits, privilege separation, and proactive security features define its architecture.
Categories: Fundamentals Init Systems
The first process after the kernel. The boot sequence from /sbin/init to services. Kernel space, user space, and the role of PID 1.
Categories: Fundamentals Filesystem
Standard directories /, /bin, /etc, /home, /var, /usr, /tmp and their purposes. Difference between /bin and /usr/bin. The role of tmpfs and a separate /var partition.
Categories: Fundamentals Package Management
Central package sources with mirrors and GPG signatures. Metadata structure for name, version, dependencies. Difference between official and third-party repositories.
Categories: Fundamentals Networking Self-Hosting
Understanding IPv4/IPv6 addressing, port concepts, subnetting, and practical networking fundamentals for containers and self-hosting services.
Categories: Fundamentals OpenBSD
The OpenBSD installer guides you through partitioning, set selection, and basic system configuration. Signed release images guarantee authenticity through SHA256 and signify verification.
Categories: Fundamentals Init Systems
Start, stop, and monitor background services. Understand automatic startup configuration, status queries, and log access.
Categories: Fundamentals Package Management
Precompiled binary packages versus self-built software. Package formats .deb, .rpm, .pkg.tar.zst. Build systems, optimizations, and trade-offs.
Categories: Fundamentals Filesystem
POSIX permissions using rwx notation and octal notation. Differences between file and directory permissions. chown and chmod for changing ownership and permissions.
Categories: Fundamentals Network DNS Self-Hosting
Understand the DNS hierarchy, resolver configuration, local DNS servers, and alternative DNS strategies for privacy-conscious network infrastructures.