Building a router (or gateway) using Fedora Server is an interesting project for users wanting to learn more about Linux system administration and networking. In this article, learn how to configure a Fedora Server minimal install to act as an internet router / gateway.

This guide is based on Fedora 28 and assumes you have already installed Fedora Server (minimal install). Additionally, you require a suitable network card / modem for the incoming internet connection. In this example, the DrayTek VigorNIC 132 NIC was used to create the router.

Why build your own router
There are many benefits for building your own router over buying a standalone box (or using the one supplied by your internet provider):

Easily update and run latest software versions
May be less prone to be part of larger hacking campaign as its not a common consumer device
Run your own VMs or containers on same host/router
Build OpenShift on top of router (future story in this series)
Include your own VPN, Tor, or other tunnel paths along with correct routing
The downside is related to time and knowledge.

You have to manage your own security
You need to have the knowledge to troubleshoot if an issue happens or find it through the web (no support calls)
Costs more in most cases than hardware provided by an internet provider
Basic network topology

The diagram below describes the basic topology used in this setup. The machine running Fedora Server has a PCI Express modem for VDSL. Alternatively, if you use a Raspberry Pi with external modem the configuration is mostly similar.

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Source: https://gtbensmagazine.com/2018/08/05/how-to-use-fedora-server-to-create-a-router-gateway/