> For the complete documentation index, see [llms.txt](https://zerodensitydocumentation.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zerodensitydocumentation.gitbook.io/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/engine-module-configuration/adding-host.md).

# Adding Host

In Reality Hub terminology, a **Host** refers to a **server configuration** that **hosts an Engine**; in other words, it is the computer you install the Reality Engine/Unreal Engine Vanilla.

ReallityHub uses different port numbers to communicate with different Engines. Here are the default port numbers:

* Reality 4.27: **6666**
* Unreal Engine Vanilla: **30020**
* Reality 5.1: **50052** 

<div align="left"><figure><img src="/files/0LCeqTXsU9yxTCltKnGF" alt=""><figcaption><p>Hosts Section</p></figcaption></figure></div>

The image above shows the default Hosts interface. To add a Host:

* Go to **Main Menu** > **Configuration**
* Select the **Hosts** under the **Engines**

To find your hostname:

<div align="left"><figure><img src="/files/1gJjCOwOHdAL3LoDwbns" alt=""><figcaption><p>Windows Command Prompt Window</p></figcaption></figure></div>

* Run the **Command Prompt** on your Windows
* Type **hostname** and click enter
* Copy your hostname

Now:

<div align="left"><img src="/files/wHFgY59sJUKk8ZAxN0rt" alt="New Host Window"></div>

* Turn back to the **Hosts** configuration inside the Reality Hub .
* Click ➕ to **Add** **a New Host.**
* Paste the **Host Name** you copied earlier.
* Click on the **OK** button.

<div align="left"><figure><img src="/files/FRZ7yWIlnC9wXdvaxMda" alt=""><figcaption><p>Hosts</p></figcaption></figure></div>

Reality Hub adds a default Display Name, IP Address, Port, Cache Directory, and Installations as soon as you define a hostname, as shown in the example image above.

**Display Name**: You can define a specific name for your Host to organize your setup better. Your computer’s hostname (in our case, it’s LA-STUDIO ENGINE 5) might not help recognize the purpose of your Engine.&#x20;

To set an example, if you are utilizing multiple engines in a studio, you might prefer to define a specific name for your Hosts, such as Studio A, Camera B, etc.

{% hint style="info" %}
Please remember that the **Host Name** refers to a server’s hostname; it must belong to your server configuration.
{% endhint %}

* **IP Address**: IP address of the server you installed the Engine.
* **Port**: 6666 is the default port for the Reality Engine. If you changed the port number during the installation, you must provide that specific port number.&#x20;
* **Cache Directory**: A directory you can use for caching your Projects
* **Can Cook**: Disabling and enabling the Cook operation for your Engines. See Cook Manager
* **Enable Launch**: This option gives you the ability to specify which Engine can be launched. You can choose both Reality Engine and Unreal Engine Vanilla at the same time.
* **Installations**: It is the Engine Installation directory where **UE4Editor.exe/UnrealEditor.exe** is located in. You can **choose** or **redefine** the directory of your Engine installation.

<div align="left"><img src="/files/609relXYY64T3YACtjUb" alt="Cache Window"></div>

As shown in the image above, you can manage your cache files in the Hosts sections.

{% hint style="info" %}
IP Addresses or names on the images above are for illustrative purposes only.
{% endhint %}