!

no ip domain-lookup

isdn switch-type basic-net3

!

!

!

interface Ethernet0

ip address 172.16.1.1 255.255.255.0

no ip directed-broadcast

ip nat inside

!

interface BRI0

ip address negotiated

no ip directed-broadcast

ip nat outside

encapsulation ppp

dialer string (put ISDN phone number here)

dialer-group 1

isdn switch-type basic-net3

no cdp enable

ppp chap hostname (Put username here)

ppp chap password (Put password here)

!

router rip

network 172.16.0.0

!

ip nat translation timeout 180

ip nat inside source list 1 interface BRI0 overload

ip http server

ip classless

ip route 0.0.0.0 0.0.0.0 BRI0

!

access-list 1 permit 172.16.0.0 0.0.255.255

access-list 100 deny ip any host 172.16.255.255

access-list 100 permit ip any any

dialer-list 1 protocol ip list 100

alias exec u undebug all