Konfiguation til Cisco 837

conf t

no service pad

service timestamps debug uptime

service timestamps log uptime
service password-encryption
enable secret PASSWORD
ip subnet-zero
no ip finger
no ip source-route
no ip domain-lookup
hostname Cisco

ip dhcp excluded-address 10.0.0.1
ip dhcp pool 0
  network 10.0.0.0 255.255.255.0
  default-router 10.0.0.1
  dns-server 212.242.40.51 212.242.40.3
interface Ethernet0
ip address 10.0.0.1 255.255.255.0
ip nat inside
no ip route-cache
ip access-group 120 in
no shutdown
interface ATM0
no ip address
no ip route-cache
no atm ilmi-keepalive
pvc 0/35
  encapsulation aal5mux ppp dialer
  dialer pool-member 1
!
bundle-enable
dsl operating-mode ansi-dmt
hold-queue 224 in
no shutdown
!
interface Dialer0
no ip route-cache
ip access-group 110 in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap callin optional
ppp chap hostname BRUGERNAVN
ppp chap password PASSWORD
ip address negotiated
ip nat outside
no shutdown
ip nat inside source list 101 interface Dialer0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0 permanent
ip http server
no access-list 1
no access-list 5
no access-list 10
no access-list 100
no access-list 101
no access-list 110
no access-list 111
no access-list 120
no access-list 1100
access-list 101 permit ip 10.0.0.1 0.0.0.255  any
access-list 110 permit tcp 212.242.40.0 0.0.3.255 any eq 23023
access-list 110 deny tcp any  any eq 23
access-list 110 permit ip any  any
access-list 120 permit udp any any range bootps bootpc
access-list 120 permit ip 10.0.0.1 0.0.0.255  any
dialer-list 1 protocol ip  permit
line con 0
transport input none
stopbits 1
scheduler max-task-time 5000
line vty 0 4
password PASSWORD
!No acl for vty
login
config-register 0x2102
end
wri mem

Eksempel på portforward:
conf t
ip nat inside source static tcp INTERN IP PORT WAN IP PORT
ip nat inside source static udp INTERN IP PORT WAN IP PORT
exit
write