Web & Deploy · medium · solved in-browser (no VM needed) · 3 tiered hints
Write /etc/nginx/conf.d/proxy-headers.conf with a location / that proxy_passes to a backend and sets the four standard forwarding headers: proxy_set_header Host $host;, proxy_set_header X-Real-IP $remote_addr;, proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;, and proxy_set_header X-Forwarded-Proto $scheme;. (Authored config, graded structurally — the engine isn't run here.)
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