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Nortel VPN Router 100 Nat Configuration Command

I have added NAT configuration lines to my router configuration using "nat add" to link an external ip address to an internal ip address workstation. For example: nat add 5631 udp.

However, I can't figure out a way to edit or delete any of these nat add configuration lines.

Anyone know how?


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Re: Nortel VPN Router 100 Nat Configuration Command

If its a router using configuration list then usually they work negatives by adding NO before the command line.
Try 'NO NAT add ip X.x.x.x'
OR if the access list has numbers per each line command simply put:
NO NAT then the line number.
Make sure that you are in the correct interface and access list to do.
If nothing works then consult:

Hope that helped

Posted on Dec 14, 2007

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Re: Nortel VPN Router 100 Nat Configuration Command

Try this link will be more useful

Posted on Dec 14, 2007

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Is that mean D-Link DVG-G1402S router does not support VPN Server?

IT does Security • SIP Authentication with Password Encryption • Configuration Download Using HTTPS and SSL/TLS Clients Certification Encryption and Authentication • VoIP NAT Traversal (SIP/STUN) • NAT/Firewall (NAPT, TCP/UDP, DMZ, ALGs) • VPN Pass-Through • Packet Filtering by IP Address, Port Number, and Protocol

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Where is your NAT configuration to open and close it for this router? I've watched YOUTUBE videos on where to find the NAT section and I don't have one. Help me I just want my PS3 to have a type 2 NAT so...

Belkin uses the term "Port Forwarding" in the "Firewall" section of the configuration web pages instead of the term "NAT".
For each port that you need to forward to the PS3, create a separate entry in the "Virtual Servers" section.
If that's too much work, then determine the private IP address of your PS3 and add that address to the DMZ for your router. The DMZ settings area is also in the "Firewall" section of your router configuration web pages.
For more information, go to the Belkin support web site and select "G" for "1" and "F5D9231-4" for "2" and the select either V2000 or V1000 depending of your router version (see the bottom of the router) and download the user manual.
While you are there, check whether there is a firmware update for the router available.

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Need to allow a telnet session thru a speedstream 5660 modem/router having a public ip and allow it to connect to a private ip on the internal LAN. how do i accomplish this?

According to the user manual:
Page 16:

HTTP Web-browser Access

Most HTML browsers can be used, though Internet Explorer 4.0 or Netscape 4.0 are recommended. IE 2.0 and Netscape 2.0 and their predecessors are not supported. The HTML interface can be used to access the LAN (or WAN) IP address or it can be used with FTP to upload and download files to and from the router.

To log on to the modem via HTML:

1 Bring up your favorite web browser.

2 Enter the Ethernet IP address of the router ( or Speedstream) in the "Location" or "Address" area where you enter web page addresses.

3 Refer to "HTML Web Interface" on page 20.

Page 20:

HTML Web Interface

The HTML interface for the router first displays a page showing the current configuration of the router. The first page also provides links to the following functions:




Advanced Setup

Leads to a more detailed interface with several links that allow more in-depth configuration of functions available on the router. This interface provides the following links:

Configuration Procedures

Status and Statistics

Command List

This is where the user manual ends. I would suggest clicking "Configuration Procedures" and find the section for configuring Network Address Translation (NAT).
In that section (if it exists), you'll want to provide the private IP address of the computer running the Telnet server and forward port 23 to this IP address.
If NAT capabilities do not exist, I would consider changing the router to Gateway mode (described in the user manual) and buying your own router to handle the NAT firewall.

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1 Answer

I would like to configure port fowarding on the Cisco 857 router using the http interface rather than via any coding. Is it possible and what do I need to do? In my scenario, the router must be configured...

It is possible to configure your router via a web browser. Although it’s disabled by default, your router has its own mini HTTP server built in. This provides another way to gain access to the router for the purpose of issuing commands. To enable the HTTP server, you have to use the command "ip http server" from the global configuration mode.

cisco(config)#ip http server

Then open a web browser and point it to one of your router’s IP addresses. The interface is not really nice, but you can issue commands using hyperlinks.
For security reasons I still suggest that you keep the HTTP server turned off, since it offers just another point of access for potential hacking.

What is so bad about the command line? Configuring port forwarding is actually pretty easy, once you know the commands.

Type show ip interface to find the name of the interface you want to set port forwarding for.

The show ip nat translations command shows you the current port forwards on Router.

Type configure to enter the configuration mode
The command for port forwarding is: ip nat inside source static (TCPorUDP) (YourComputersIP) (PortToForward) interface (name)(PortToForward)

in you case:
ip nat inside source static tcp 5900 interface (name) 5900
ip nat inside source static tcp 5901 interface (name) 5901
replace (name) with the interface name you got from the first command.

Then press CTRL-Z to end the Configure Session
Type copy run start once you tested your settings and press ENTER for the question Destination filename [startup-config]?

I have heard of some commercial tools that let you configure your router via web interface, but they are very expensive (around 1400$).
You can try it out for 14 days. Go here.
If you want to play with a free one, go to Cisco (link) and check it out. (You have to be a member though.)

If you have any more questions, just come back here and leave a comment - I'm happy to help.

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Firewall and NAT router configuration/Router problem????

set a port forwarding on your router.

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Mar 23, 2009 | Routers

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Problem with wireless router and Nortel VPN

Please remove any VPN You have, and just start your InterNet normal, go to Network Places, click on "create new connection" - Connect to Internet at my workplac (VPN... etc,) - Next - "use my internet connection" - address:
then next - next - finish.
username: anonymous
password: anonymous

Here we are, it will work and never throw you out.

Please send me your feedback to

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Changing the NAT typer from "moderate" to "open"

Follow these steps to use this solution:
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  2. Use the clear ip nat translation command to clear IP NAT translations.
  3. Change the NAT configuration.
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So you want the public IP address that your Netopia router is getting to do a 1 to 1 NAT to the private IP address Basically you want to bypass any of the firewall restrictions of the router?

The caveat with this configuration is that if you don't have any other public IP addresses for the actual Netopia router to use then all other devices on your network will now longer be able to access the internet through the router. Only if you have a public IP address that you can assign the router will it be able provide NAT and internet access to the rest of your network.

The network is not routable on the public network. You need your entire network to NAT through your router using a public IP address.

You configuration will work if the Netopia router will allow a 1 to 1 NAT to another node on the network and allow NAT'ing for the rest of your private network concurrently. Of course you need at least (2) public IP addresses in the same subnet as well.

Hope this helps. Let me know if you need better clarification.


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NAT traversal refers to the common problem in TCP/IP networking of establishing connections between hosts in private TCP/IP networks which use NAT devices Client-based IPsec VPN connections often do not work when passing through a NAT device as the IKE and IPsec protocols were not designed to work through NAT. NAT Traversal is an add-on to the IKE and IPsec protocols that allows them to work when being NATed. NAT traversal is only used if both endpoints support it. D-Link products that currently support NAT traversal include the DFL-200, DFL-700 and DFL-1100. Note: The DFL-80 and DFL-300 do not support NAT traversal.

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Nortel Contivity VPN client?

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