CentOS 7 has firewalld installed as a default firewall program. But firewalld can be used to configure CentOS 7 as a router as well. To make a CentOS 7 router, all you have to do is to configure a DHCP server on CentOS 7 and then use firewalld to configure IP forwarding. That’s it. In this article, I am going to show you how to configure CentOS 7 as a router on your network.