Connect and Set Up NAT box

The router box, sometimes referred to as a Cable/DSL router or a Network Address Translation box (NAT box), is a hardware bridge between two networks.  In this case we are using NAT boxes to put individual internal LANs on a multi-server LAN or a corporate LAN.  SMC makes a device that contains both the functions of a NAT box with a LAN HUB and it is this device we use.  There are two versions of this box, both are SMC 70008ABR routers.  The differences are:

1.  The older version has 8 ports with an additional uplink port.

2.  The newer version has 8 auto-sense uplink ports.

What you need to set up a NAT box.

1. A NAT box.  (part of these systems)

2. A choice made by the customer's system manager regarding which of the two possible LANs the system is to be attached to.  

3. The following network addresses from the system manager:
   A static IP address and mask for the NAT box on the LAN
   Possibly two DNS addresses
   Possibly two WINS addresses
   A gateway address if applicable

4. Two LAN cables

5. A PC or lap top to set up the NAT box

Overview

There are two sides to the NAT box, the LAN side connecting to the systems internal LAN and the WAN side connecting to either the multi-server LAN or the corporate WAN.  The latter is not recommended since it leaves the system unprotected.

1. To set up the LAN side connect your PC to a port on the internal LAN side of the NAT box.

2. Make sure or configure your PC network connection is set to DHCP.

3. Configure the NAT box to the predetermined Fixed IP address of the NAT box.
   Note: This change of address causes the PC to disconnect from the NAT box.

4. Re-configure your PC to the fixed IP address on the internal LAN.

5. Re-connect your PC to the NAT box and configure the WAN side.

6. Connect the NAT box to the multi-server LAN or to the corporate LAN.

Keep the NAT box's user manual handy.

Other Considerations

In GS1280 systems, where there is more than one NAT box, one, usually the one in the system cabinet, is connected on its WAN side to the external LAN.  The others receive their own addresses and do not have their WAN sides connected at all.

Reset the NAT box

It is likely that your NAT box has been configured in manufacturing and you will have to reset it before following this procedure.  

To reset:

1. If the NAT box is connected to the Internal LAN, remove all cables from MBMs and PBMs to the LAN side of the box

2. Press and hold the blue reset button for 5 seconds.

3. Wait for reset to complete.

NAT box Installation Procedure

1. Using a BN25G-xx (RJ45) cable connect your PC to any LAN port on the front of the NAT box in the system.

2. Make sure or configure your PC network connection is set to DHCP.

1. Click the start button, select settings, and Network and Dial-up Connections

2. Select  local area connections and  click on properties.

3. Select Internet Protocol (TCP/IP) and click on properties.

4. Verify or configure the adaptor to Obtain an IP address automatically.

5. Click the OK button.

6. Verify that the NAT box has provided your PC with an IP address.  You can see this by bringing up a DOS window and issuing the ipconfig command.
   The address given by the NAT box should be 192.168.2.xx.  If you do not get this address, with a pen or pencil press and hold reset button on the front of the box.
   
   
   
    

3. Configuring the NAT box.
   Proceed if you are configuring a "new" NAT box.
   Click here if you are configuring an "old" NAT box.
   
   Setting up the WAN side of the box
   
   Bring up an Internet Explorer window on the PC and target the NAT box.  First disable proxy settings on the browser and set the IP address given as the Default Gateway by the NAT box (this is the default, factory set address of the NAT box) - http://192.168.2.1:88.
   Once this is done the NAT box login screen appears.
   Leave the Password field empty and click on the Login button.
   
   
   
   The following window appears.
   
   
   
   Click on Advanced Setup.
   
   
   
   Click on System.
   
   
   
   If this NAT box is used to connect to the server management LAN, Click on time.  Otherwise skip to the LAN side setup.
   
   
   
   Select set time zone.
   Disable Automatic Time Server Maintenance.
   Apply.
   
   
   
   Click on Remote.
   Enable Remote Management.
   Apply.
   
   
   
   Open the WAN drop down menu.
   Choose Static IP Address.
   Click on the More Configuration button.
   
   
   
   Enter the following:

Field	Enter for multi-server LAN	Enter for Corporate LAN
		Not recommended.
IP address assigned by your ISP field	Provided by the customer.  (we recommend: 90.0.100.1 for the first sys. 90.0.100.2 for the second; 90.0.100.3 for the third...)	Provided by the customer.  This is the address of the NAT box on the Corp-LAN.
Subnet Mask field	255.255.0.0	255.255.0.0 (or provided by the customer)
ISP Gateway Address field	90.0.0.102	If the customer follows our suggested addressing, this is the address of the AMS on the corporate LAN.  If the customer did not follow our suggested addressing scheme, you'll have to get this address from the customer.

 

Enter the Server management LAN IP Address provided by the customer, the Subnet Mask, and the Server Provider Gateway Address.
Apply.



If the customer uses a Domain Name Server on the WAN to which the NAT box connects, enter the address assigned by the customer.  These two addresses are necessary only if the customer uses a Domain Name Server.  Note that these addresses are WINS addresses and differ from DNS addresses.    

Field	Enter
Domain Name Server (DNS) address	Provided by the customer
Secondary DNS Address	Provided by the customer.

 


Click on Firewall to bring the firewall drop-down menu into view.
Enable the firewall.
Apply.



Click on DMZ to bring the DMZ drop-down menu into view.
Enable DMZ.
Enter "1" for the first IP address.  Note the 192.168.2.x will auto change to 10-class when the LAN setup id is entered.
Apply.



Click on LAN to get to the LAN setup screen.
If this NAT box is connected to the server management LAN on the WAN side, on this screen change the IP address from 192.168.2.1 to 10.253.0.2. (this now becomes the address of the NAT box on the internal LAN.)
If this NAT box is the second NAT box that is daisy-chained, enter leave 192.168.2.1 as the IP address.
If the third NAT box, change the IP address to 192.168.2.2
If the Nth NAT box, enter 192.168.2.(N-1)
Leave the subnet mask as is and disable the NAT box's DHCP Server.  (When you disable the DHCP server, the IP address pool  addresses are ignored.)
Disable DHCP.
Apply.

Note that the NAT box is no longer available  to your laptop or PC because of this change of address, however setup is now complete.

Old NAT box setup

1. Setting up the WAN side of the box
   
   Bring up an Internet Explorer window on the PC and target the NAT box.  First disable proxy settings on the browser and set the IP address given as the Default Gateway by the NAT box (this is the default, factory set address of the NAT box) - http://192.168.2.1:88.
   Once this is done the NAT box login screen appears.
   Leave the Password field empty and click on the Login button.
   
   
   
   The following window appears.
   
   
   
   Click on Setup.
   Click on Enter to bring up the setup wizard.
   Click on Enter again to leave the Password blank.
   If this NAT box is used to connect to the server management LAN, Click on time.  Otherwise skip to the LAN side setup.
   On the left hand side of this screen select set time zone and set the time.
   Click Enter.
   Select setup.
   Click on WAN.
   Select static IP address and click on More Configuration.
   
   Enter the following:

Like this:



Click

.
The following Advanced Settings screen appears:




Ignore the warning and click