Redirect 80 → 443
- Input
- return 301 https://$host$request_uri;
- Expected output
- Migração para HTTPS
Common nginx case.
port 80
Port 80 — HTTP
The search for port 80 deserves its own page because the question is usually direct: “is this still used?”.
The role of port 80
- Port 80 remains the default port for unencrypted HTTP.
- Today it often appears in automatic redirects to HTTPS and in controlled internal networks.
Practical examples
Internal HTTP
- Input
- app.internal:80
- Expected output
- Tráfego sem TLS em rede controlada
Depends on context and policy.
Full tool FAQ
Deliberate decision: unauthorized port scanning is an abuse vector and has legal implications in several countries. We prefer a clear, safe reference.
Frequently asked questions
Is port 80 insecure?
The issue is the protocol without TLS, not the port number itself.
Do I still need to open 80 in the firewall?
For many sites yes, at least to redirect users and validate certain flows.