[ipstatico]

ho trovato questa configurazione su internet ma alcune righe di codice mi sono oscure.le ho evidenziate.qualcuno sa spiegarmele? inoltre se nella access-list ho inserito un ip sbagliato come faccio a cambiarlo?

no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router (nome del router)
!
enable password Cisco (password variabile)
!
ip subnet-zero
!
no ip source-route
!
interface Ethernet0
ip address XX.XX.XX.XX XX.XX.XX.XX (IP LAN, locale)
no ip directed-broadcast
ip nat inside
hold-queue 4096 in
hold-queue 4096 out
no shutdown
!
interface ATM0
no ip address
no ip directed-broadcast
no ip mroute-cache
no atm ilmi-keepalive
pvc 8/35 ( Rilasciato da Provider)
encapsulation aal5mux ppp dialer
dialer pool-member 1
bundle-enable
hold-queue 224 in
no shutdown
!
interface Dialer0
ip address negotiated
no ip directed-broadcast
ip nat outside
encapsulation ppp
dialer pool 1
ppp pap sent-username PIPPO (provider) password PLUTO (provider)
hold-queue 4096 in
hold-queue 4096 out
!
ip nat inside source list 1 interface Dialer0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
no ip http server
!
access-list 1 permit any

!
no cdp run
!
line con 0
transport input none
stopbits 1
line vty 0 4
password Cisco (password variabile)
login
!
end