Port 443 — HTTPS
Encrypted web traffic (HTTP over TLS) — the backbone of the modern secure web.
| Port number | 443 |
|---|---|
| Service | HTTPS |
| Transport | TCP |
| Category | Web |
Is port 443 safe?
Generally safe to expose; keep TLS configuration up to date.
Frequently asked questions
What is port 443 used for?
Port 443 (TCP) is the standard port for HTTPS. Encrypted web traffic (HTTP over TLS) — the backbone of the modern secure web.
Is port 443 safe to open?
Generally safe to expose; keep TLS configuration up to date.
Is port 443 TCP or UDP?
Port 443 commonly uses TCP.