Network Plus Unit 4 Section 2: Wireless Networking

1/28/20101/28/2010Network PlusUnit 4 WAP Configuration

WAP ConfigurationIn this section we will discuss basic Wireless Access configuration using a Linksys router running the dd-wrt firmware.

#Network+ Guide to Networks, 5th Edition49Configuring Wireless Connectivity DevicesSet SSIDDetermine if beacon on or offSecurityWPA2 is bestSet a secure administrative passwordVerify DHCP settingsIf needed, configure Port forwardingUpgrading WAP to dd-wrt Firmware DD-WRT is a third party developed firmware released under the terms of the GPL for many ieee802.11a/b/g/h/n wireless routers based on a Broadcom or Atheros chip reference design. The firmware is maintained by BrainSlayer and is hosted at dd-wrt.com.Among other features not found in the original Linksys firmware, DD-WRT adds the following:WDS wireless bridging/repeating protocolRadius Authentication for more secure wirelessAdvanced Quality of Service controls for bandwidth allocationSoftware support for the SD-Card hardware modification.Installing dd-wrt Select WAP RouterGo to dd-wrt.com

Click on the Router Database button

Install dd-wrtSelect FirmwareEnter your router model (Linksys 54g) in the search box and press Enter.

Click on your version of your WAP Router software

Install dd-wrtDownload FirmwareClick the desired firmware version and save it to your computer. Document the path used to save the firmware files.

dd-wrt Configuration

dd-wrt Configuration - SSID

dd-wrt Configuration - DHCP

dd-wrt Configuration - DynDNS

dd-wrt ConfigurationPort Forwarding

Multiple Access Points

Multiple Access PointsConfiguration StepsSet WAPs to same SSID and Security/keySet WAPs to different IP addressesFirst WAP 192.168.1.1Second 192.168.1.2Set WAPs to different ChannelsUse Channels 1 6 11Have DHCP running on only one WAPDisable DHCP on additional WAPsPlug additional WAPs into same wired subnetWireless BridgesClient Bridge

Join two wired networks by two Wireless routers building a bridge. All computers can see one another in Windows Network.Wireless BridgesClient ModeJoin two wired networks by two Wireless routers (unbridged). Computers on one wired network can not see computers on other wired network in Windows Network.A router in Client Mode connects to another wireless Access Point (the host router). It uses its wireless connection as the WAN interface, and shares the internet connection only to the LAN ports. It is not seen as an access point by laptops or other computers scanning for AP's and does not accept wireless connections from client devices.

#Wireless BridgingRepeatersExtend the Wireless access area using a second router WIRELESSLY connected to the primary.Extends area for wired clients alsoThe second WAP does not need to be connected to a wired switch as is done in setting up multiple WAPsRepeater only modeA wireless repeater with DHCP & NATenabled, clients ondifferent subnetfrom host AP (primary router). Computers connected to one router can not see computers connected to other routers in Windows Network.http://www.dd-wrt.com/wiki/index.php/Linking_Routers

Wireless BridgesRepeater BridgeA wireless repeater with DHCP & NATdisabled, clients onsame subnetas host AP (primary router). That is, all computers can see one another in Windows Network.A key point is that the Repeater Bridge forms a single subnet.

Network+ Guide to Networks, 5th EditionNetwork+ Guide to Networks, 5th EditionThe End