
Fixing Cloudflare Wildcard Subdomain Proxy Errors
If you've set up a wildcard DNS record (e.g., *.example.com) in Cloudflare and a...

If you've set up a wildcard DNS record (e.g., *.example.com) in Cloudflare and a...

When NGINX logs upstream connection refused for an SSL backend, it usually means the...

You change a DNS record in Cloudflare, wait, and the old IP still resolves. This is a common frus...

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

You open Windows Security and see a yellow warning: "Real-time protection is off." Or you...

You're seeing a 302 redirect loop in Nginx — the browser keeps bouncing between URLs until it...