We have defined several terms related to NAT so far. It’s the right time to test that understanding in the context of Figure 10-2. R1 is the router performing NAT and has two interfaces: Fa0/0 as the inside interface while Fa0/1 is the outside interface. A PC having IP address 192.168.1.2 on the inside needs to communicate with a server having IP address 173.194.67.102 on the outside.