> For the complete documentation index, see [llms.txt](https://surge.mitsea.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://surge.mitsea.com/others/port-forwarding.md).

# 端口转发

Surge 可以监听特定的本地端口，并将来自该端口的 TCP 请求转发到特定的主机。当 Surge 的请求处理（系统代理或增强模式）未启用时，此功能可以独立使用。

配置示例：

```ini
[Port Forwarding]
0.0.0.0:6841 localhost:3306 policy=SQL-Server-Proxy
```

`policy` 参数是可选的；如果未指定，将使用标准的代理匹配来决定策略。

此功能通常用于开发和调试场景，例如使用 SSH 连接到像 MariaDB 这样的服务器。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://surge.mitsea.com/others/port-forwarding.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.