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DSL , VPN, and NAT on Perimeter Router


I have been trying to setup a perimter router with limited success connecting with Bellsouth's DSL service. I'm using a cisco 1720 router with C1700 Software (C1700-NO3SY7-M), Version 12.2(2)XQ1, EARLY DEPLOYMENT RELEA

SE SOFTWARE (fc1). Although my config has been functional it has been you can not telnet to it from the outside world. Furthermore, I cannot publish an internal web server using static nat. Has there been a problem with this IOS ?

Here is a config dump minus some numbers. Would appreciate any ideas?

Current configuration : 1624 bytes


version 12.2

no parser cache

no service single-slot-reload-enable

service timestamps debug uptime

service timestamps log uptime

no service password-encryption


hostname DSL-GATE


logging rate-limit console 10 except errors

enable password gateface


memory-size iomem 20

mmi polling-interval 60

no mmi auto-configure

no mmi pvc

mmi snmp-timeout 180

ip subnet-zero



no ip telnet comport enable


ip audit notify log

ip audit po max-events 100

no ip dhcp-client network-discovery

vpdn enable


vpdn-group pppoe


protocol pppoe





interface ATM0

no ip address

atm vc-per-vp 256

no atm ilmi-keepalive


dsl operating-mode auto


interface ATM0.1 point-to-point

pvc 8/35

pppoe-client dial-pool-number 1



interface FastEthernet0

ip address

ip mtu 1492

ip nat inside

speed auto


interface Dialer1

ip address negotiate

ip nat outside

encapsulation ppp

ip mtu 1492

dialer pool 1

dialer-group 1

ppp authentication " " callin

ppp chap hostname " "

ppp chap password 7 " "

ppp pap sent-username " " password 7 " "


ip nat inside source list 1 interface Dialer1 overload

ip nat inside source static "public ip" extendable

ip classless

ip route Dialer1

no ip http server


access-list 1 permit




line con 0

logging synchronous

line aux 0

line vty 0 4

password " "


transport input pad udptn telnet rlogin

line vty 5 15

password " "


transport input pad udptn telnet rlogin




Re: DSL , VPN, and NAT on Perimeter Router

I didn’t see anything obvious on bug tool kit. You could try searching with your exact version.