DNS 동작 원리 + DNS over TLS/HTTPS
DNS(Domain Name System) : 사람이 읽을 수 있는 도메인 이름(ex. www.nangman.cloud)을 기계가 읽을 수 있는 IP주소로(ex.175.208.202.40)로 변환해주는 기술 즉, 사이트에 접속할 때 175.208.202.40 이라는 긴 숫자를 직접 기억해 입력하는 것이 아니라 www.nangman.cloud와 같이 사람이 ...
An infrastructure engineering community, Nangman Infra .
We bring real passion to reliable systems architecture.
Users may never see it, but it supports every service they rely on.
We are engineers who sustain the world’s connections behind the scenes,
an infrastructure engineering community called Nangman Infra.
"Invisible, but foundational to everything."
From networking and operating systems to cloud and observability
We study how systems work and build infrastructure knowledge step by step.
We learn alongside senior engineers working at AWS and Equinix

We grow together through hands-on industry experience.

We grow together through hands-on industry experience.
Share practical experience and guidance
Build connections and stay in conversation
Get advice on jobs and long-term direction
A structured path from fundamentals to production practice
Learn the fundamentals of shell usage, file systems, and process management
Understand the principles behind TCP/IP, DNS, and routing
Study Linux kernel concepts and core system administration
Understand the physical foundations of servers, storage, and data centers
Practice AWS core services such as EC2, S3, and VPC
Learn container orchestration with Docker and Kubernetes
Manage infrastructure with Infrastructure as Code practices
Learn the basics of firewalls, encryption, and access control
Monitor system health and analyze logs
Apply what you learned by building and operating real services
We document troubleshooting paths and technical depth.
Stay up to date with operational news and service updates.
팀 일정 조율을 더 쉽게 할 수 있는 When2Work 서비스를 오픈했습니다. 링크 하나로 참여자의 가능 시간을 수집하고, 가장 많이 겹치는 시간대를 빠르게 확인할 수 있습니다.
웹 페이지를 AI 에이전트가 인용 가능한 구조화된 증거로 읽을 수 있도록 변환하는 touch-browser를 공개했습니다. read-view, compact-view, extract, session synthesis를 제공하며 공개 문서 벤치마크 5/5 성공과 cleaned DOM 기준 평균 11.58배 토큰 절감을 기록했습니다.
Transnote AI 기반 회의록 작성 웹 서비스가 런칭되었습니다. 서비스 소개와 바로가기는 Projects 페이지에서 바로 확인할 수 있습니다.
We welcome collaboration, hiring, and technical exchange.
125 Dongseo-daero, Yuseong-gu, Daejeon