router1(config)# ip nat inside source list 1 interface serial0 overload<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

router1(config)# interface Ethernet 0

router1(config-if)# ip address 160.10.1.1 255.255.255.0

router1(config-if)# ip nat inside

router1(config-if)# interface serial 0

router1(config-if)# ip address 175.10.1.1 255.255.255.0

router1(config-if)# ip nat outside

router1(config-if)# exit

router1(config)# access-list 1 permit 160.10.1.0 <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />0.0.0.255