ip nat translation timeout 30
ip nat pool nat1 192.168.1.150 192.168.1.159 netmask 255.255.255.0
ip nat inside source list 1 pool nat1
access-list 1 permit 10.0.0.0 0.255.255.255
interface ethernet 0
 ip nat outside
interface serial 0
 ip nat inside
interface serial 1
 ip nat inside