> For the complete documentation index, see [llms.txt](https://docs.9proxy.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.9proxy.com/getting-started/residential-proxy-by-ips/for-linux/proxy-authentication.md).

# Proxy Authentication

Follow these steps to enable and configure proxy authentication for 9Proxy on Linux.

## 1. Start 9Proxy

Run the following command to start 9Proxy:

```
systemctl start 9proxyd
```

To make 9Proxy start automatically on system boot, run:

```
systemctl enable 9proxyd
```

If this command is executed, you won't need to manually start 9Proxy each time.

## 2. Sign In to Your Account

Follow the instructions here to sign in.

## 3. Configure Proxy Authentication

To set up Authentication for your proxies, use the following command:

```
9proxy setting --basic_auth --proxy_password [password] --proxy_username [username]
```

* \[password] : your desired proxy password
* \[username] : your desired proxy username