This tutorial can be utilized in a business network environment. This is based on my knowledge of how to configure a Buffalo AP (Access Points)/Bridge Router (other Brands and Models of AP/Bridge Routers may have some similar features) that’s connected behind a Sonicwall TZ 210 or any Firewall/Security Appliance. An installation CD is not required in this entire tutorial; please leave it up to me to guide you.

Note: Before you start reading this Tutorial it is important to know that due to the complexity of this process and to avoid disruption, it is preferable to do this on off-peak or after business hours.

Pre-requisites: A broadband connection, Windows Server 2003 and above (best to use Windows 2008 Server R2) configured with Dynamic Host configuration Protocol (DHCP) and Domain Name System (DNS), a Security or Firewall Appliance, an AP/Bridge Wireless Router capable (we will use a Buffalo AP/Bridge in this tutorial), wired computers, wireless computers and other wireless devices such as IPad, Tablets & Smart Phones.

Additional information: Your Firewall or Security Appliance must have the Network Address Translation (NAT) enabled. Make sure that DHCP is disabled from your Firewall/Security Appliance.

Make a note of the existing Subnet of your network. For example, 192.168.1.X, which we will be using in this tutorial. Also, write the IP Address, Subnet, Gateway and DNS Server that you will be going to assign in the LAN configuration of your Router. Note that the Gateway will be your router’s new IP Address.

Note: The network cables that are connected from the Modem and Network Swith to the Sonicwall's WAN and LAN Ports will remain connected throughout this entire tutorial. It is important to remember not to disconnect or unplug any of these network cables.

To begin, connect the power cable into the Buffalo Router and wait for the lights to stabilize. Connect a patch network cable from the WAN or Internet Port of the Router to the Sonicwall Port (X2, X3 etc.). Connect another patch network cable coming from a computer to another open ethernet port (X2 or X3) on the Sonicwall device.

While your computer is connected directly to the Sonicwall device, modify the Local Area Network (LAN) setting. In this guide, we will be using the network subnet of 192.168.11.X (Buffalo's Router Subnet).

In Windows 7 and Vista - Click on the Start button, then type ncpa.cpl in the "Search Programs and Files" box then click on ncpa.cpl at the top of the left-hand side box to open up the Local Area Connection screen. Double click on Local Area Connection, then click on Properties and double click Internet Protocol Version 4 (TCP/IP v4).

In Windows XP - Click on Start, then select Run. Type ncpa.cpl into the box then press OK to open up the Local Area Connection screen.
Double click on Local Area Connection, then click on Properties and double click on Internet Protocol Version 4 (TCP/IP v4).
Type the IP Address, Subnet Mask, Default Gateway and DNS Server of your Network. In this tutorial we will assign an IP Address of 192.168.11.5, Subnet Mask of 255.255.255.0 and a Default gateway of 192.168.11.1. Leave the DNS Servers empty.



 

Open up a browser from your computer and type the Buffalo Router’s default IP of 192.168.11.1. and pressRETURN
Username: admin
Password: password


It may prompt you to change the default User Name and Password. Make sure to use a complex password. Think of a combination of letters, numbers and symbols for your router’s new password.



Select the Basic Setup Tab and disable the WAN Connection Type.



Select the Network Settings Tab, go to Network Setup and type in the Router’s New IP, Subnet Mask, Gateway and Local DNS. Remember that the subnet should be coming from your network’s configuration. Make sure to disable DHCP to avoid any conflicts and verify that DHCP is enabled in your Windows Server.



Select the Wireless Tab, then select Basic Settings. You may choose if you’d like to set up your Router as an AP (Access Points) or Client Bridge. I prefer a Client Bridge setup for a greater wireless coverage. Select Client Bridge (Router).
Assign an SSID (wireless network name) but do not use your Router’s Name.



In the Wireless Tab, then Wireless Security we will manually secure your wireless network by using WPA2; do not use any network security lower than WPA2 as you do not want your wireless network to be vulnerable from outside unseen malicious objects and threats. You may choose to auto generate the pass-phrase or manually assign a complex password for your wireless network.


Select the Security Tab, then in Firewall Protection verify that the Firewall is Enabled.



Save all the settings.

Important Notes: Some Internet Service Providers (ISPs) may require a MAC Cloning. You will need to contact your ISP regarding this. To enable MAC Cloning, go to Setup tab, then MAC Address Clone, then choose Enable.



Change the LAN’s setting of your computer back to Obtain an Auto IP Address Automatically.
In Windows 7 and Vista - Click on the Start button, type ncpa.cpl in the Search Programs and files box then click on ncpa.cpl to open Network Connections then double click on Local Area Connection to bring up the Local Area Connection Status screen. Double click on Local Area Connection, then click on Properties, double click Internet Protocol Version 4 (TCP/IP v4), make sure that Obtain an IP address automatically and Obtain DNS server automatically are both enabled.

In Windows XP - Click on Start and select Run. Type ncpa.cpl in the box then press OK to open up the Local Area Connection screen.
Double click on Local Area or Wireless Connection, then click on Properties and double click on Internet Protocol Version 4 (TCP/IP v4) and make sure that Obtain an IP address automatically and Obtain DNS server automatically are both enabled.



Unplug the network cable from the Buffalo Router’s WAN Port and unplug the network cable coming from the Sonicwall's X2 or X3 Port. Unplug the power cable from the Buffalo router and wait for 30 seconds, then plug the power cable back again, wait for all the lights to stabilize. Connect the network cable to the Sonicwall's X2 or X3 Port and connect the other end into the LAN Port of the Buffalo Router. You may now connect all your wireless devices to your new SSID (wireless network name), making sure that you have the proper pass-phrase typed in.

Open up a browser from any computer (wired or wireless) and see if you’re able to log on to your router setting by using the new Router’s IP, which in this tutorial we assigned a 192.168.1.3 (as an example). You may enable or modify other great features of your new router.

Troubleshooting Tip:
If you encounter any internet disconnection issues, you may power off the Router for 30 seconds, disconnect the network cable from the Router and Sonicwall's X2 or X3 port. Power on the Router, connect the network cable back to the router's LAN or Ethernet port and connect the network cable back to the Sonicwall's X2 or X3 port. Wait until all the lights stabilize then see if your issue has been resolved.

I hope that this Tutorial helped you configure an AP/Bridge Router behind a Security or Firewall Appliance. Utilize the great features of your new router if they are available such as Network Attached Storage (NAS), Guest Zone, File Transfer Protocol (FTP), Hotspot and a lot more.

© 2012 2xg