# Network communication

In this video, we’ll look at all the components of rport and how they communicate with each other.

### The video covers <a href="#the-video-covers" id="the-video-covers"></a>

* What ports are used for what?
* What needs to be allowed on your firewall?
* How does remote access over tunnels work?
* What port forwarding do you need if you are using a router with Network Address Translation?

We will start with an RPort server with a directly attached public IP address.

In the second part, I’ll explain how the setup changes if you run the rport server behind network address translation, where the public IP address is bound to the router.

{% embed url="<https://vimeo.com/798835798>" %}
RPort Network communication explained
{% endembed %}


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