---
lang: en
title: 'API docs: http-caching-proxy.proxyoptions.port'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.http-caching-proxy.proxyoptions.port.html
---

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[Home](./index.md) &gt; [@loopback/http-caching-proxy](./http-caching-proxy.md) &gt; [ProxyOptions](./http-caching-proxy.proxyoptions.md) &gt; [port](./http-caching-proxy.proxyoptions.port.md)

## ProxyOptions.port property

The port where the HTTP proxy should listen at. Default: 0 (let the system pick a free port)

<b>Signature:</b>

```typescript
port?: number;
```

