The following SAMPLE is a basic config file to get you started. You will need to edit for your SPID's, directory numbers (DN's), router name, user name & password for your ISP.

!
version 12.3
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname
!
boot-start-marker
boot-end-marker
!
enable secret
!
!
pots country US
!
no aaa new-model
no ip subnet-zero
ip name-server <1st ISP dns server IP here>
ip name-server <2nd ISP dns server IP here>
!
isdn switch-type basic-ni
!
!
!
interface Ethernet0
ip address 192.168.1.1 255.255.255.0
ip nat inside
no shutdown
!
interface BRI0
no ip address
no ip redirects
no ip unreachables
no shutdown
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-ni
isdn spid1 <1st SPID here> <1st phone number here>
isdn spid2 <2nd SPID here> <2nd phone number here>
no cdp enable
ppp multilink
!
interface Dialer0
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
encapsulation ppp
no ip split-horizon
ip tcp header-compression
dialer pool 1
dialer idle-timeout 2147483
dialer string
dialer hold-queue 10
dialer load-threshold 1 either
dialer-group 1
no cdp enable
ppp authentication pap callin
ppp pap sent-username password
ppp multilink
!
ip nat inside source list 1 interface Dialer0 overload
ip nat inside source static tcp *l port on box you want raffic forwarded to> interface Dialer0 *orwarded>
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
no ip http server
no ip http secure-server
!
access-list 1 permit any
access-list 20 permit 192.168.1.0 0.0.0.255
access-list 20 deny any
access-list 110 deny ip 10.0.0.0 0.255.255.255 any
access-list 110 deny ip 172.16.0.0 0.15.255.255 any
access-list 110 deny ip 192.168.0.0 0.0.255.255 any
dialer-list 1 protocol ip permit
!
!
line con 0
transport preferred all
transport output all
stopbits 1
line vty 0
access-class 20 in
exec-timeout 0 0
password
login
transport preferred all
transport input all
transport output none
line vty 1 4
login
transport preferred all
transport input all
transport output all
!
!
end

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by rec9140 edited by redxii
last modified: 2006-04-08 15:33:25