# WHATPORT(5173)

## NAME

port 5173 — Vite dev server — Vite's default development server port.

Protocol: TCP

## DESCRIPTION

Vite picks 5173 for `vite dev` unless server.port says otherwise, and it walks upward (5174, 5175) when the port is taken. Anything built on Vite — modern React, Vue, Svelte and SvelteKit setups — lands here. It is unregistered with IANA, so a listener on 5173 is a frontend developer's machine or a container running a dev build.

## EXPOSURE

**Do not expose.** A dev server with hot-module reload, source maps and no auth has no business on a public interface.

## CHECK

```sh
curl -sI http://localhost:5173/
```

## SEE ALSO

- docs — [Vite — Server Options (server.port default 5173)](https://vite.dev/config/server-options) (vite.dev)
- docs — [Vite — Command Line Interface](https://vite.dev/guide/cli.html) (vite.dev)
- source — [vitejs/vite on GitHub](https://github.com/vitejs/vite) (github.com)

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