Setting Up (NAT)

(1891 total words in this text)
(17954 Reads)  

New to ADSL and routers If you are not sure how to setup your EN5861 then this is a simple step-by-step guide of how to get a basic NAT setup running.

Setting your PC

Make sure you have installed your network card (NIC) and the necessary drivers.
The router has a DHCP server which will assign your PC's an IP address so all PC's will need to be set to obtain an IP address from the router. This varies between operating systems, but on most Windows systems it can be found in the Control Panel under Networks/Network Connections.

The TCP/IP settings should be set to obtain an IP address automatically

Connecting Your Router

• Place your router in a location where it will be well ventilated. Do not stack it with other devices on carpet.
• After ensuring that the power switch on the back of the router is switched off,connect the router to an AC power outlet using the power cord.
• Use a straight-through cable (red label) to connect your PC to an Ethernet port on the router. You can also connect up to three additional LAN devices to the built-in Ethernet hub.
• Switch the router power switch on.

If you want to skip the quick explanation of some of the features and terms used while configuring the router just follow the numbered steps and screenshots.

1. Using your web browser, enter the following default router address into the address field of your browser: http://192.168.254.254

2. At the login prompt, make the following entries:

User Name: login
Password: admin

3. After you have logged into your router, a dialog will appear, prompting you to change your password. It is a security risk to leave the password set to the factory default. Therefore, changing the password is strongly recommended. To change the password, click on OK at the prompt.

Router Information Screen

The first screen in the Web User Interface is the Router Configuration screen. This screen displays basic router information and router configuration settings.

It also provides links to other router setup and control forms. On the Router Configuration screen, the following information is presented:

Router Information - Including the model number, software version number and options that have been enabled.

Router Configuration - Displays router configuration details such as LAN IP address, WAN data and voice PVC (ATM) or DCLI (frame relay), WAN protocol and WAN network settings.

A menu of links is on the left side of the Router Configuration screen. This menu links to forms that provide settings for your router. Easy Setup is the first set of forms on the menu.

4. Click on the Easy Setup link to begin a basic configuration of your router.

Easy Setup is a set of web forms designed to facilitate the configuration of your router quickly and easily. Easy Setup is a permanent feature, accessible from any platform with a web browser.

Wide Area Network Configuration

The first Easy Setup screen is for the configuration of Wide Area Network settings. The information on this and subsequent screens is obtained from your Internet Service Provider (ISP).
The first required entry is for the Permanent Virtual Circuit (PVC). The PVC is a logical connection between the router and the ISP. It is described using two numbers; the Virtual Path Identifier (VPI) and the Virtual Channel Identifier (VCI).

5. Enter the PVC and VCI values into the WAN Interface fields as indicated.

6. Select the WAN protocol PPPoA with VC.

Click on the Next button to continue with Easy Setup.

You will see a screen requesting a PPP user name and a PPP password. You should have received this information from your service provider.

<img border="0" src="images/sections/en5861/image08.jpg"

7. Enter your user name and password in the fields indicated. Click on the Next button to continue Easy Setup.

8. As options, you can choose NAT enabled to activate NAT (Network Address Translation) and Block NetBIOS traffic.

Click on the Next button to continue with Easy Setup.

Dynamic Host Configuration Protocol

You can configure IP routing automatically using DHCP, or manually by providing a WAN IP address and subnet mask.
The WAN IP address and subnet mask define the IP address and network of the WAN interface. This information is required in order to use NAT.
If your ISP has not provided specifics for these settings, and you are unsure what is appropriate, choose IP routing, configure automatically from WAN using DHCP, and NAT enabled.

If you have chosen to have IP routing enabled, you must now choose to obtain your IP configuration automatically from a DHCP server on the WAN, or to configure IP routing manually. To configure IP routing manually, you must enter a unique IP address and subnet mask for your router.
DHCP dynamically assigns IP configuration information to PCs on the LAN (local network, not internet), thus avoiding the need to set IP configurations for each PC manually.

9. You can enable the DHCP server by clicking on the indicated checkbox.

10. You can set your router to obtain DNS information automatically. You can also choose to configure DNS manually by making the required entries in the form. If you are configuring DNS manually, you must enter at least one DNS IP address.

Domain Name Service (DNS) maps host names to IP addresses. DNS is performed by Domain Name Servers. The domain name identifies the default name for the network. The Windows Internet Naming Service (WINS) maps NetBIOS names to IP addresses.

Click on the Next button to continue Easy Setup.

LAN IP Configuration

The final screen in Easy Setup is for Local Area Network (LAN) configuration.

11. Enter the IP address into the field provided. The IP address is the network address of your router. This address must be globally unique, unless NAT has been enabled.

12. Enter the subnet mask into the field provided. The subnet mask is used along with the IP address to determine if specific LAN IP traffic should be forwarded to the WAN.

13. Click Save and Reboot to save your settings in Easy Setup. Your router will reboot with the new configuration settings.

Beyond Easy Setup, your router is equipped with additional features that can be implemented using the Web interface links found on the Router Information Screen. These features, along with brief descriptions of each, are listed below:

Extra features

• Access Control - The Access Control feature restricts administrative access and control of your router to a select group of hosts.
• Feature Activation - This feature supports the installation of feature activation keys that are used to enable additional features on your router.
• Current Date and Time - This feature enables you to set the date and time on your router.
• Set DHCP - The DHCP feature enables or disables DHCP, and manages your IP address pool.
• Set NAT - This feature enables or disables Network Address Translation between the Local and Wide Area Networks.
• Set Firewall - A simple yet powerful network security feature for the creation and development of firewalls.
• Dial Backup - The Dial Backup feature provides a backup connection to the Internet through an external modem, connected to the console port of your router.
• IKE/IPSec Configuration - This is an optional feature for your router. IKE/IPsec (Internet Key Exchange/Internet ProtocolSecurity) configuration screens enable optional authentication and encryption of IP traffic for the authenticity, integrity and privacy of your communications.

Additional features can be found in by pointing your browser to http://192.168.254.254/tools

These include miscellaneous tools to set various options without the use of Telnet. Also included is the facility to upload/download and edit any of the router files and are detailed below.

• Dump State - Variable dump (for debugging purposes).
• Access Control - Router administrative access restrictions for Telnet or remote access.
• Editor - Edit files in the router filesystem.
• Routing - Edit the static routing table for an interface.
• Features - Display/Modify the additional feature list.
• Password - Change the administrative password.
• Syslog - Display/Modify a syslog server to log firewall activity.
• Upload - Upload files to the routers filesystem.
• Download - Download files from the routers filesystem.
• Strings - String table for the tools module.
• Time - Set the router clock.
• Reboot - Reboot the router.
• Default - Reboot the router, restoring to defaults (Warning there is no confirmation prompt!).
• Factory - Reboot the router, erasing ALL configuration (Warning there is no confirmation prompt!).