interface Dialer1
ip nat outside
interface Vlan11
ip nat inside
!Эту сторку повторить на всех интерфейсах с которых нужен доступ в инет
ip nat translation tcp-timeout 200
ip nat translation pptp-timeout 20
ip nat translation udp-timeout 50
ip nat translation finrst-timeout 5
ip nat translation syn-timeout 10
ip nat translation dns-timeout 10
ip nat translation icmp-timeout 10
ip nat inside source list NAT_Internet interface Dialer1 overload
ip access-list extended NAT_Internet
permit ip 192.168.0.0 0.0.0.255 any
! добавляй кого хош.