Port Forward to Cisco 837

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Hi!

My cisco 837 is connected to a ADSL Router by Ethernet Cable. I have forwarded the telnet port from my ADSL Router to the LAN IP of the Cisco Router so that i can connect to it Remotely but it is not working. I am able to telnet internally but from Internet it is not working. I am not using Cisco Router for ADSL Connectivity.

Any Suggestions?

Thanks.

[Marwan ALshawi]

Do u have telnet enabled I'm ur router ?

Can you post ur router config

Also check in ur Adsl device the inbound of telnet is allowed

Sent from Cisco Technical Support iPhone App

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I need to use this router like a incoming pptp vpn and telnet server. The router is connected to my ADSL Router by a LAN Cable. I am not using ATM on this router. I only have basic Ethernet Configuration:

Current configuration : 1071 bytes
!
version 12.4
service config
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
enable password password
!
aaa new-model
!
!
!
aaa session-id common
!
resource policy
!
!
!
ip cef
vpdn enable
!
!
!
!
username admin privilege 15 password 0 password
!
!
!
!
!
interface Ethernet0
description $ETH-LAN$
ip address 192.168.11.3 255.255.255.0
hold-queue 100 out
!
interface Ethernet2
no ip address
shutdown
hold-queue 100 out
!
interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
dsl operating-mode auto
!
interface FastEthernet1
duplex auto
speed auto
!
interface FastEthernet2
duplex auto
speed auto
!
interface FastEthernet3
duplex auto
speed auto
!
interface FastEthernet4
duplex auto
speed auto
!
ip default-gateway 192.168.11.1
ip http server
no ip http secure-server
!
!
!
control-plane
!
!
line con 0
no modem enable
line aux 0
line vty 0 4
privilege level 15
password password
!
scheduler max-task-time 5000
end

Thanks.

[Dennis Mink]

I assume you can ping 192.168.1.1 from the cisco router?

i would put a logged access list on the cisco router like so:

access-list permit ip any any

line vty 0 4

access-class 23 in

now hit your public IP address with telnet a few times

the do sh access-list 23  and see if you have any matches.

also you might want to run portscanner on you public IP address and check port 23 and see if its open at all.

R.,

[p.mcgowan]

the IP address of your 837 is a private 192.168.x.x address, do you have a NAT on your ADSL router so the IP address of your 837 is being natted to a public IP address?

[Create Share]

Nat is already configured on my ADSL Router. May be i should try to use one of the LAN Ports of 837 as a WAN Port and connect it to my ADSL Router's LAN Port.

What is your opinion?

Thanks.

Edit:

I am able to connect to my Cisco Router from outside using pptp with DHCP enabled on Ethernet0 but it does not work with a Static IP.

Thanks.