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hkoeck 79a13f0919 Verbessere Challenge-Angaben, TLS-Fixes und Windows-Tauglichkeit
Fachliche Fixes:
- Easy-RSA: explizites --subject-alt-name (SAN) ergaenzt, sonst
  scheitert curl trotz CA-Import
- HSTS: max-age auf 3600 reduziert, includeSubDomains erklaert,
  Warnung zur host-weiten Browser-Falle + Reset-Weg
- Challenge 9: Backup-/Restore-Schritte fuer nginx.conf
- Compose-Portwechsel: redeploy statt proxy-reload klargestellt
- log_format-Platzierung (http-Block) dokumentiert
- add_header-Vererbungsfalle erklaert (Ch. 4 + Abgrenzung Ch. 8)

Angabe-Struktur (alle 13 Challenges):
- Einheitliches Schema: Ausgangszustand, Schritte (Muss),
  Zielzustand/Akzeptanz, erwartete Done-Check-Ausgaben
- Arbeitsweise global geklaert (additiv, Ausnahme Ch. 9, Reset)

Robustheit/Kosmetik:
- Load-Balancing: eindeutiger INSTANCE-Marker statt fragilem grep
- Challenge-3-Titel auf "Alias-Route" korrigiert
- HTTPS_PORT in .env.example parametrisiert
- Umlaut-Konsistenz (ASCII)

Windows-Tauglichkeit:
- Klargestellt: Test-Kommandos laufen in WSL bash, nicht PowerShell
  (curl-Alias-Falle), Stack-Steuerung per Wrapper oder WSL
- Wireshark: empfohlener Capture-Weg in WSL (tshark), npcap-Hinweis
- CA-Import: Linux-Trust-Store (WSL) vs Windows-Browser (certutil)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-05-31 22:08:41 +02:00

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events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
sendfile on;
server_tokens off;
upstream backend_a {
server backend-a:80;
}
upstream backend_b {
server backend-b:80;
}
server {
listen 80;
server_name _;
location = /healthz {
default_type text/plain;
return 200 "ok\n";
}
location / {
return 301 https://$host:8443$request_uri;
}
}
server {
listen 443 ssl;
server_name localhost;
ssl_certificate /etc/nginx/certs/localhost.crt;
ssl_certificate_key /etc/nginx/certs/localhost.key;
ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers on;
# max-age im Lab bewusst kurz (1h). In Produktion eher 1 Jahr (31536000).
# includeSubDomains weitet HSTS auf alle Subdomains aus (Produktions-Best-Practice).
# Achtung: HSTS bleibt im Browser host-weit haengen -> siehe Warnhinweis in Challenge 12.
add_header Strict-Transport-Security "max-age=3600; includeSubDomains" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "DENY" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;
add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
add_header Cross-Origin-Opener-Policy "same-origin" always;
add_header Cross-Origin-Resource-Policy "same-origin" always;
add_header Content-Security-Policy "default-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; object-src 'none'; base-uri 'none'; frame-ancestors 'none'" always;
location / {
root /usr/share/nginx/html;
try_files $uri $uri/ /index.html;
}
location /service/a {
proxy_pass http://backend_a/;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Proto https;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location /service/b {
proxy_pass http://backend_b/;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Proto https;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
}