https://zorba91.tistory.com/136
https://wayhome25.github.io/cs/2018/03/11/ssl-https/
https://opentutorials.org/course/228/4894
행정전자서명 프로파일 및 알고리즘 상세서
Government Public Key Infrastructure Profile and Algorithm Specification
https://www.gpki.go.kr/upload/download/1.3-GPKI-CPS%20Profile%20and%20Algorithm.pdf
공인인증서를 통한 로그인(Google)
https://patents.google.com/patent/KR20060091548A/ko
웹 표준 기반 공인인증서비스 도입 및 구현 기술 안내서
https://www.rootca.or.kr/kcac/down/Guide/Guideline_for_PKI_service_based_on_web_standard.pdf
HTTPS
DNS
https://opentogether.tistory.com/30
https://lkhlkh23.tistory.com/76
https://server-talk.tistory.com/121
DNS R-R
https://blog.globalhost.co.kr/27
SLB
https://net-gate.tistory.com/15
L4로드밸런싱
https://itmore.tistory.com/entry/L4-%EB%A1%9C%EB%93%9C%EB%B0%B8%EB%9F%B0%EC%8B%B1-%EB%B0%A9%EB%B2%95
ㅗㅆㅗㅆ포트
https://johngrib.github.io/wiki/why-http-80-https-443/
AWS
https://aws.amazon.com/ko/premiumsupport/knowledge-center/connect-http-https-ec2/