R1:FE0/0: 192.161.20.1/24Local Lan IPFE0/1: 192.161.21.1/29Outside Lan IPNat PC1 192.161.21.2Nat PC2 192.161.21.3Nat PC3 192.161.21.4IP Route 192.161.20.0 255.255.255.0 192.161.21.0IP Route 192.161.21.0 255.255.255.0 192.161.20.0R2:FE0/0: 192.161.20....