Set Up Network Address Translation on Fedora 22

How to set up Fedora as a network address translator, or NAT. It is useful when only the Fedora PC has an IP restricted connection to the Internet and you want to get online with more devices.

June 30, 2016

NAT Setup

I suppose we have two network interfaces.

We need to assign static ip for "eth1" (e.g. Next we need to enable ipv4 forwarding (not available for ipv6).

$ sysctl net.ipv4.ip_forward

Next we need to masquerade local network IP addresses (in this example without specifying any zone). We can install firewall-config and tick "Masquerade" button or simply use the following command.

$ firewall-cmd --add-masquerade

On Local Network Devices

We need to do just two things. Set our Fedora PC as a gateway and add IP address of any DNS server.