Tag: #네트워크
Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 3 posts
The complete guide to SSH operations: from key management to hardening a server without locking yourself out
sshdconfig hardening, choosing and distributing key types, ProxyJump and port forwarding, and the layered order to debug a connection that will not come up, organised from an operator viewpoint. Includes the procedure th
2026-08-15 · 17 min read #리눅스#ssh#보안#운영#서버관리A complete guide to Linux firewalls and access control: handling nftables, firewalld, and ufw without locking yourself out
Starts from the structure of nftables and lays out what firewalld and ufw do on top of it. Covers the procedure that keeps you from locking yourself out while changing rules remotely, and the diagnostic order for when ru
2026-08-15 · 18 min read #리눅스#방화벽#nftables#firewalld#보안The Complete Guide to DNS: Following a Name All the Way to an Address ♪ Listenable
Splits name resolution into five separate segments — stub resolver through authoritative server — and works through record types, TTL and caching, delegation, reading dig output, propagation delay and stale caches, DNSSE
2026-08-15 · 25 min read #리눅스#dns#네트워크#운영#트러블슈팅