# Remote Control Prerequisites

Ensure that the following prerequisites are met before you access computers remotely:

1. [Environment setup](https://www.manageengine.com/products/desktop-central/help/remote_desktop_sharing/remote_desktop_pre-requisites.html#environment)
2. [Check port availability](https://www.manageengine.com/products/desktop-central/help/remote_desktop_sharing/remote_desktop_pre-requisites.html#Ports-to-be-opened-for-Remote-Control)

## Environment setup

Endpoint Central supports two types of viewers, HTML5 and Active X. Based on the viewer, set up the environment from where a remote connection is being established.

### HTML5 Viewer

Ensure the version of browser in viewer machine meets the following criteria:

- Edge all versions
- Firefox 38 and above
- Google Chrome 31 and above
- Safari 8 and above

### Active X

- This viewer is supported to access Windows devices only.
- Download and install the Remote Control Component available in the product console on the viewer device.

[![Remote Control ActiveX](https://www.manageengine.com/products/desktop-central/help/images/rc_activex_download.png)](https://www.manageengine.com/products/desktop-central/help/images/rc_activex_download.png)

## Check port availability

Ensure following ports are open in the Central Server machine and reachable from remote computer as well as the viewer:

- 8443 : Secure remote connection
- 8444 : Remote connection

**Note:** Using UDP port 8443 will establish direct communication between viewer and agent. [Click here](https://www.manageengine.com/products/desktop-central/direct-connection-in-remote-control.html) to know more.

You are now all ready to establish remote connection. The next step is to explore the available [configurations](https://www.manageengine.com/products/desktop-central/help/remote_desktop_sharing/remote_desktop_sharing_configuring_settings.html) to simplify your work!