DongHyeonkaandClaude Opus 5
69d4502757
Control experiment isolates two independent causes: the nginx 443 block still emits X-Forwarded-Proto http, and Traefik rewrites forwarded headers regardless. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
88 lines
3.5 KiB
Plaintext
88 lines
3.5 KiB
Plaintext
수집 시각: 2026-09-03 15:02:27 KST
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=== [A] 정상 경로 — 브라우저와 같은 요청 ===
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명령: curl -s https://app1.hyeonworks.com/api/echo
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x-forwarded-proto http
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x-forwarded-port 80
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x-forwarded-for 10.42.0.1
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x-forwarded-host app1.hyeonworks.com
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x-real-ip 10.42.0.1
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x-forwarded-server traefik-59b7647586-ftwf8
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--- 앱이 해석한 값
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scheme http
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secure False
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serverName app1.hyeonworks.com
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serverPort 80
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remoteAddr 10.42.0.8
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localAddr 10.42.1.3
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requestUrl http://app1.hyeonworks.com/api/echo
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=== [B] 대조 실험 1 — nginx 우회, 헤더 없이 Traefik 직접 ===
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명령: curl http://192.168.122.11/api/echo -H 'Host: app1.hyeonworks.com' (test-server 에서)
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x-forwarded-proto http
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x-forwarded-port 80
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x-forwarded-for 10.42.0.1
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x-forwarded-host app1.hyeonworks.com
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x-real-ip 10.42.0.1
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x-forwarded-server traefik-59b7647586-ftwf8
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--- 앱이 해석한 값
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scheme http
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secure False
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serverName app1.hyeonworks.com
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serverPort 80
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remoteAddr 10.42.0.8
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localAddr 10.42.0.9
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requestUrl http://app1.hyeonworks.com/api/echo
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=== [C] 대조 실험 2 — nginx 우회, 올바른 헤더를 명시해서 ===
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명령: 위와 동일 + -H 'X-Forwarded-Proto: https' -H 'X-Forwarded-Port: 443' -H 'X-Forwarded-For: 203.0.113.7'
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x-forwarded-proto http
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x-forwarded-port 80
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x-forwarded-for 10.42.0.1
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x-forwarded-host app1.hyeonworks.com
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x-real-ip 10.42.0.1
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x-forwarded-server traefik-59b7647586-ftwf8
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--- 앱이 해석한 값
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scheme http
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secure False
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serverName app1.hyeonworks.com
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serverPort 80
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remoteAddr 10.42.0.8
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localAddr 10.42.1.3
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requestUrl http://app1.hyeonworks.com/api/echo
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★ [C] 에서 https/443/203.0.113.7 을 명시했음에도 http/80/10.42.0.1 이 도달했다.
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→ Traefik 이 들어온 X-Forwarded-* 를 신뢰하지 않고 재작성한다는 독립적 증거.
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=== [D] 위조 테스트 — 클라이언트가 직접 헤더 주입 ===
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명령: curl https://app1.hyeonworks.com/api/echo -H 'X-Forwarded-Host: evil.example.com' -H 'X-Forwarded-For: 1.2.3.4'
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x-forwarded-proto http
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x-forwarded-port 80
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x-forwarded-for 10.42.1.0
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x-forwarded-host app1.hyeonworks.com
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x-real-ip 10.42.1.0
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x-forwarded-server traefik-59b7647586-ftwf8
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--- 앱이 해석한 값
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scheme http
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secure False
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serverName app1.hyeonworks.com
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serverPort 80
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remoteAddr 10.42.0.8
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localAddr 10.42.0.9
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requestUrl http://app1.hyeonworks.com/api/echo
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★ evil.example.com 과 1.2.3.4 가 도달하지 않았다 = 신뢰 경계는 작동.
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=== [E] 파드 분배 8회 ===
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pod 10.42.1.3 | traefik traefik-59b7647586-ftwf8
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pod 10.42.0.9 | traefik traefik-59b7647586-ftwf8
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pod 10.42.1.3 | traefik traefik-59b7647586-ftwf8
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pod 10.42.0.9 | traefik traefik-59b7647586-ftwf8
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pod 10.42.1.3 | traefik traefik-59b7647586-ftwf8
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pod 10.42.0.9 | traefik traefik-59b7647586-ftwf8
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pod 10.42.1.3 | traefik traefik-59b7647586-ftwf8
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pod 10.42.0.9 | traefik traefik-59b7647586-ftwf8
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=== [F] HTTP → HTTPS 리다이렉트 ===
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status=301 location=https://app1.hyeonworks.com/api/echo
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