Configuring NAT

• Once we have a network with connectivity internally, we want to configure the outside router to communicate with devices outside of our network using NAT. The first thing we need to do is configure inside and outside ports on the router between our network and the outside world. An example of this is below.

• In the screenshot above, we want to configure R1 to assign a NAT address to our web server and allow it to be accessed from another network using that NAT address. The first thing we do is access our internal interface connected to the server, and set it as a NAT inside interface. Then, we set our serial port as the NAT outside interface, which will be communicating with external traffic. Then, we set our server to have its own NAT address of 50.0.0.1, which external devices can query to reach the web server, which has a private IP of 10.0.0.2.