# How can I play a script that needs to reach a site on a private network?

> Normally, Loadster scripts play from the public cloud. Run your own engines as script players if you need to hit a site on a private network.

Source: https://loadster.com/faqs/playing-a-script-on-a-private-network/

Normally, when you play a script from your Loadster web dashboard, Loadster generates the traffic from a shared
engine on the public internet. Of course, this doesn't work so well when your site is on a private network and
therefore unreachable.

If the site you're testing is unreachable, the requests will fail, often with one of these errors:

```text
unknown host
connect timeout
could not connect to host
could not connect to server
```


No problem! You can run your own Loadster Engine on the same network as the site you're testing, or on a
network that is allowed to route traffic to it, and select that self-hosted engine as your script player.

## Run your own Loadster Engine

Follow the instructions in [Testing with Loadster Engine](https://loadster.com/manual/testing-with-loadster-engine/) to
install and configure your engine. For the purposes of scripting, you only need one, but if you need to
run large load tests you can install more.

Using a self-hosted Loadster Engine is included at no additional cost, whether you're testing with a Loadster plan
or Loadster Fuel.

## Select the engine as your Script Player

After you've registered your new engine, go to <a href="https://loadster.com/dashboard/settings">Settings</a> and select it as your
**Script Player**. This is a global setting, so the next time you play a script, the traffic will be generated from your self-hosted
engine instead of the public one.