Hello,
basically, you need to define an inside and an outside interface, and an entry that defines what is being translated to what. I guess the easiest way to configure this is to look at a sample configuration:
In this configuration, all your inside addresses will get translated to whatever IP address is given by your provider to your ADSL connection. Obviously, your addressing might be different, but you get the idea...
interface Ethernet0
ip address 192.168.1.1 255.255.255.0
-->ip nat inside
!
interface ATM0
no ip address
no atm ilmi-keepalive
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
!
interface Dialer0
ip address dhcp
ip accounting output-packets
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap
-->ip nat outside
!
-->ip nat inside source list 1 interface Dialer0 overload
-->access-list 1 permit 192.168.1.0 0.0.0.255
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
!
dialer-list 1 protocol ip permit
!
end
HTH,
GP
