WLAN Book

NetStumbler for Mac OS X

NetStumbler for Mac OS X?

If you are looking for a NetStumbler like program for Mac OS X you have several options. My personal favorite is KisMAC. I also use the built in airport utility to scan for wireless access points.

KisMAC

KisMAC is an opensource and free stumbler/scanner application for Mac OS X. It has an advantage over MacStumbler/iStumbler/NetStumbler in that it uses monitor mode and passive scanning.

KisMAC supports several third party PCMCIA cards – Orinoco, PrismII, Cisco Aironet, Atheros and PrismGT. USB Prism2 is supported as well, and USB Ralink support is in development. All of the internal AirPort hardware is supported as well.

KisMAC

MacStumbler

MacStumbler is a utility to display information about nearby 802.11b and 802.11g wireless access points. It is mainly designed to be a tool to help find access points while traveling, or to diagnose wireless network problems. Additionally, MacStumbler can be used for “wardriving”, which involves co-ordinating with a GPS unit while traveling around to help produce a map of all access points in a given area.

MacStumbler requires an Apple Airport Card and MacOS 10.1 or greater. MacStumbler doesn’t currently support any kind of PCMCIA or USB wireless device.

MacStumbler works like NetStumbler and relies on responses to probe requests to discover access points. This implementation also prevents MacStumbler from detecting wireless stations or hidden networks because they don’t respond to probe requests.

MacStumbler

iStumbler

iStumbler is the leading wireless discovery tool for Mac OS X, providing plugins for finding AirPort networks, Bluetooth devices, and Bonjour services with your Mac.

iStumbler

Airport Utility

The utility is located at:
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport

Typing the above command path can be avoided by creating a symbolic link to the command in /user/sbin/ by copying and pasting below into a terminal window.

sudo ln -s /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport /usr/sbin/airport

This will allow you to simply type “airport” in the terminal window to execute the command.

Typing “airport -s” will scan for broadcasting wifi devices.

See my previous post for more information about the airport utility for additional information.

Filed under: How To Guides, WLAN Tools | no comments yet, your thoughts are welcome

Mac OS X WiFi Wireless Scanner

Mac OS X WiFi Wireless Scanner

If you are looking for a basic WiFi scanner for Mac OS X then the command line airport utility may fit your needs.

The utility is located at:

/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport

Typing the above command path can be avoided by creating a symbolic link to the command in /user/sbin/ by copying and pasting below into a terminal window.

sudo ln -s /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport /usr/sbin/airport

This will allow you to simply type “airport” in the terminal window to execute the command.

Display Current Status of Wireless

airport -I

Will provide information about the current wireless connection.

$ airport -I
     agrCtlRSSI: -64
     agrExtRSSI: 0
    agrCtlNoise: -91
    agrExtNoise: 0
          state: running
        op mode: station
     lastTxRate: 48
        maxRate: 54
lastAssocStatus: 0
    802.11 auth: open
      link auth: wpa-psk
          BSSID: 0:b:85:6:9f:f
           SSID: SSID
            MCS: -1
        channel: 1

Display All Nearby Access Points

airport -s

Will perform a wireless broadcast scan of nearby wireless devices.

$ airport -s
SSID BSSID RSSI CHANNEL SECURITY (auth/unicast/group)
Fairfield_Inn 00:22:7f:0c:75:99 -76  11      NONE
Fairfield_Inn 00:22:7f:0c:71:59 -62  11      NONE
Fairfield_Inn 00:22:7f:0c:75:79 -81  1       NONE
Fairfield_Inn 00:22:7f:0c:75:29 -69  1       NONE
Fairfield_Inn 00:22:7f:0c:74:c9 -54  1       NONE

Poor Man’s Mac OS X Wireless Site Survey Software

~$ airport -s -r 99

Will repeat the scan 99 times and is a quick way to scan for nearby access points without having to retype the command while walking.

$ airport -s -r 99
SSID BSSID RSSI CHANNEL SECURITY (auth/unicast/group)
Fairfield_Inn 00:22:7f:0c:75:99 -76  11      NONE
Fairfield_Inn 00:22:7f:0c:71:59 -62  11      NONE
Fairfield_Inn 00:22:7f:0c:75:79 -81  1       NONE
Fairfield_Inn 00:22:7f:0c:75:29 -69  1       NONE
Fairfield_Inn 00:22:7f:0c:74:c9 -54  1       NONE

SSID BSSID RSSI CHANNEL SECURITY (auth/unicast/group)
Fairfield_Inn 00:22:7f:0c:75:99 -75  11      NONE
Fairfield_Inn 00:22:7f:0c:71:59 -62  11      NONE
Fairfield_Inn 00:22:7f:0c:75:79 -78  1       NONE
Fairfield_Inn 00:22:7f:0c:75:29 -70  1       NONE
Fairfield_Inn 00:22:7f:0c:74:c9 -62  1       NONE

Disassociate From A Wireless Network

airport -z

Will disassociate (disconnect) from the wireless network without having to disable AirPort using the “Turn AirPort Off” feature via the MAC OS X graphical interface.

How To Spoof A MAC Address On Mac OS X

1) use airport -z to disconnect from the wireless network (required to change the MAC address)
2) sudo ifconfig en1 lladdr 00:00:00:00:00:00:01 (will require root password)

Filed under: How To Guides, Uncategorized, WLAN Site Survey, WLAN Tools | 1 Comment

NetStumbler for Windows 7

NetStumbler for Windows 7

The latest version of NetStumbler is 0.4.0 and was release over 5 years ago on April 21, 2004. The officially supported operating systems do not include Windows 7 or Windows Vista for obvious reasons.

Some users have reported being able to use NetStumbler version 0.4.0 on Windows Vista by running NetStumbler in Windows Vista Compatibility Mode. Instructions for configuring Windows Vista compatibility mode for NetStumbler are below and should be the same for Win7.

Configuring Windows Vista or Windows 7 for Compatibility

To configure the compatibility mode for an application, just locate the installation directory (C:\Program Files\Network Stumbler\) and right click on the .exe (NetStumbler.exe), selecting Properties from the menu.

Select the Compatibility tab as shown in image below.

NetStumbler Vista Compatibility Mode

This didn’t work for me. I didn’t spend too much time researching why, but the reason is most likely because NetStumbler itself doesn’t work with all wireless cards even when using Windows XP or Windows 2000.

Other Options Instead of NetStumbler

Thankfully Windows 7 is intended to be an incremental upgrade to the Windows line, with the goal of being compatible with applications and hardware with which Windows Vista is already compatible.

This means that all of the other options that we know about already for Windows Vista should work with Windows 7.

1) Use netsh command.

netsh show BSSID results with SSID

netsh show BSSID results with SSID

2) Use alternative programs. I recommend inSSIDer or Vistumbler

inSSIDer

Filed under: WLAN Tools | no comments yet, your thoughts are welcome

Disable Wireless When Connected to LAN in XP and Vista

Disable Wireless When Connected to LAN in XP and Vista

We are releasing a Windows XP and Vista program called BridgeChecker that extends the “Disable Upon Wired Connect” capability that is available for Broadcom wireless cards to any brand wireleless card when the ethernet interface is connected.

BridgeChecker

BridgeChecker is a windows utility that can automatically disable/enable wireless interfaces. Whenever your computer is connected to an Ethernet port and the link state is good, the utility can automatically turns off the IEEE 802.11 wireless network interface. This conserves IP address allocation, reduces security risks, resolves dual interface routing issues, and prolongs battery life.

BridgeChecker Settings

The settings screen can be accessed by right clicking on the WLAN Book “globe” icon in the task bar.

BridgeChecker Task Bar Globe Icon

Task Bar Menu Options

BridgeChecker Task Bar Menu

Program Settings

WLAN Book BidgeChecker Settings

BridgeChecker Requirements

– Program tested on Windows XP and Vista operating systems
– Requires .NET Framework 2.0 or above
.NET 3.5 Service Pack 1 (Full Package) direct download from Microsoft
– Windows Vista users that have UAC enabled are required to manually allow RunCMD.exe to run as Administrator. See screen shots below.

Running BridgeChecker Program as an Administrator in Windows Vista

In Windows Vista the “RunCMD.exe” file is located in the C:\Program Files\WLAN Book\BridgeChecker\ folder.

Disable Wireless When Connected to LAN in XP and Vista

Disable Wireless When Connected to LAN in XP and Vista

Recommended Usage Scenarios

The program can be used in the following scenarios.

  • disable wireless when connected to lan
  • disable wireless when docked
  • disable wireless when ethernet detected
  • disable wireless when wired
  • disable wireless when on LAN
  • disable wireless when cable connected
  • disable wireless when in docking station
  • disable wireless when ethernet plugged in
  • disable wlan when lan connected

Known Issues with BridgeChecker v1.0.4.22

– Detects enabled VMware virtual interfaces as enabled physical interfaces causing program to disable wireless card. Work around is to disable VMware interface when not in use.
– If computer has more than one wireless card, the program may not enable/disable correct card or may enable/disable both cards.

Comments, Bugs, and Feature Requests

Please use post comment feature below to let use know if the BridgeChecker program met your requirements. When commenting pelase let us know your Windows operating system version and wireless card brand and model if possible.

Comments about bugs and feature requests are welcome and encouraged. We may be able to enhance this program or recommend other products.

BridgeChecker Download

BridgeChecker Download

Filed under: WLAN Tools | 8 Comments

Vista WiFi Wireless 60 Second Lag Problem

Vista WiFi Wireless 60 Second Lag Problem

Have you ever used Skype, World of Warcraft (WoW), or any delay sensitive application online and noticed an annoying hiccup every 60 seconds? Based on my tests this lag is caused by Windows Vista wireless background scans used to keep available wireless networks updated.

My theory is that every 60 seconds Windows Vista’s wireless manager scans for other WiFi networks. This scan causes a minor hiccup in wireless networking because the client radio stops transmitting and receiving information on the current WiFi channel while it listens for networks on other channels.

A simple ping test and a timer can be used to measure the impact of this scan process. The results of my test are below. The replies are around 30ms or less but every 60 seconds they jump to over 500ms.

Time: 8:51:34 PM — Reply: 839ms
Time: 8:52:33 PM — Reply: 709ms
Time: 8:53.32 PM — Reply: 590ms

For basic Internet browsing and email the above delay spikes go unnoticed but for more interactive applications like voice over IP (VoIP) and online gaming, the lag caused by the scans can be annoying.

Below are screen shots of a Windows Vista station “pinging” www.yahoo.com using the following command “ping -t www.yahoo.com -l 1400″ and Windows Vista’s clock.

Windows Vista WiFi 60 Second Lag Delay Test

Vista WiFi Wireless 60 Second Lag Problem

Vista WiFi Wireless 60 Second Lag Problem

Vista 60 Second Lag Fix

There doesn’t seem to be a way to fix this lag issue using configurable settings available in Windows Vista’s wireless manager or WLAN Autoconfig. Turning off Vista automatic connection features didn’t help.

Vista WiFi Wireless 60 Second Lag Problem

Vista Anti-Lag (VAL)

The only way I was able to stop the delay spike from occurring was to use a third party program called Vista Anti-Lag available at www.codecase.de.

Vista WiFi Wireless 60 Second Lag Problem

Results of ping test after enabling Vista Anti-Lag are below….no more delay spikes!

Vista WiFi Wireless 60 Second Lag Problem

Vista Anti-Lag (VAL) v1.1.1 Download

I was able to download Vista Anti-Lag from here.

Vista Anti-Lag (VAL) optimizes your wireless connection in Windows Vista (every edition).
Benefits / features:

Stops “Lag Peaks” / “Lag Spikes”
No dropouts / droppers anymore with Skype and Voice Over IP
Download at full speed without interruptions
Lag free gaming with Windows Vista
The best: IT’S FREE!

Background:
Windows Vista doesn’t work with the optimal wireless settings. Some of these settings are causing 1-5 sec dropouts with many wireless cards, which are appearing every 30-60 sec. These dropouts are very hated in the gaming community and if users are using voice over IP applications or other real-time protocols.

Filed under: WLAN Troubleshooting | 6 Comments

Solar Powered WiFi

Solar Powered WiFi

Solar Powered WirelessUsing solar power has many drawbacks, the biggest being that when there is no sun there is no power. To overcome this problem a battery is used to power the device and the solar panel is used to keep the battery charged. A solar power system typically has two other components, charge controller and inverter. The solar panel charges the battery and proper charging is managed by the charge controller. The battery powers an inverter which converts the DC voltage to AC voltage. Wireless devices are almost always DC powered and can be powered by the battery, eliminating the need for an inverter.

Sizing A Solar Powered WiFi System

The steps for sizing a solar power systems are outlined below.

  1. Determine insolation value (daily peak sun hours) for installation site
  2. Determine system voltage (usually 12 to 24 volts)
  3. Determine daily equipment load requirements in Amphours/day
  4. Select battery based on amphours needed
  5. Select solar panel size
  6. Select solar panel installation method

For a basic solar powered WiFi hotspot, the Meraki solution is a good choice. If you looking to power your own equipment with solar panels, Green WiFi has information online about the system they built for WiFi projects.

Green WiFi’s Solar Powered Solution

Below is a complete solar WiFi system by Green WiFi, a company “committed to providing solar powered access to global information and educational resources for developing regions and K-12 school children striving for knowledge in a digitally divided world.”

Solar WiFi System

Solar Powered Meraki Outdoor

Meraki Solar WiFi Pole MountMeraki announced plans to offer a “solar-powered unit for reaching those hard-to-wire places” in June 2007 and finally released a product in December 2008.

I have first had experience installing a Meraki outdoor system and I would agreed with Meraki that “in many cases the single most expensive line item in an Outdoor network installation is the time and material required to cable and install an access point. The Solar drastically reduces this cost, requiring only 30 minutes of a trade-level installer. Since there are no electrical or network cabling runs, there are no electricians involved. This translates into a significant cost savings in many applications.”

One item that will probably cost more when installing a pole mounted solar powered WiFi system is the pole. The extra weight of equipment and solar panel will require more time sizing the correct type of pole and installation method compared to a pole for a much lighter electrical grid powered access point.

“Green WiFi”

Using solar power for WiFi, WiMax, or any wireless system should only be considered if utility power is not available or extending power to device installation location is too costly. In most cases the amount of power used by an access point or wireless bridge is minimal compared to a computer or laptop so going green isn’t going to reduce your “carbon footprint” by much.

Filed under: How To Guides | no comments yet, your thoughts are welcome

Airplane WiFi Wireless Internet

Airplane WiFi Wireless Internet

Airplane WiFi InternetHaving in-flight Internet access will probably make flying enjoyable again for many. I haven’t personally experienced in-flight WiFi but look forward comparing EVDO based service by Aircell to satellite based service by Row 44 in the near future.

Aircell’s GoGo Airplane Internet Service

American Airlines, Delta, and Virgin America currently offer the service using Aircell’s GoGo service. Aircell has been authorized by the FAA and FCC to use cellular frequencies for inflight broadband communications. Based on a tech primer by Aircell from March 2007 the network is summarized below.

  • 100 or fewer EVDO antennas across the US providing coast-to-coast coverage.
  • AirCell broadband uses an EV-DO (Rev. A) air-to-ground link, which provides peak data rates up to 3.1Mbps from the ground to the airplane, and up to 1.8Mbps from the airplane to the ground.
  • Usable Internet access but not high speed Internet as expected by users with 30Mbps Internet access at home.

Language from tech primer below acknowledging speed limitations of network architecture and GoGo service.

AirCell broadband will be fast enough to give you complete, unfettered access to the Internet without excessive load times. It will run regular e-mail programs with normal attachments just like you do on the ground. It’s not as fast as a T1 line feeding a large corporation, but in daily operations very few people would notice a difference in download times between the two – and then, only when working with very large files. Participants that have demonstrated prototypes of the system in flight have been extremely happy with their experience.

Row 44’s Airplane Internet Service

Southwest and Alaska Airlines have selected Row 44. Unlike Aircell, who built a wireless network for inflight WiFi Internet, Row 44 purchases bandwidth from HughesNet. Bandwidth can be very high, much higher than the EVDO based network used by Aircell but HughesNet uses geosynchronous satellites (about 42,164 km from Earth) has always suffered from latency issues when used for two-way communications. Additional details from Row 44’s website about the broadband system are below.

  • Data rates averaging 30 Mbps in the downlink direction (from the satellite to the aircraft) and 620 Kbps maximum in the uplink direction.
  • System will allow full access to the Internet as well as VoIP services, cell phone roaming usage where allowed by government regulation as well as live TV using IPTV.
  • The system weighs less than 150 lbs and can be installed in two overnights, with the plane re-entering revenue service between the overnights.
  • Second multi-cast 45 Mbps receive-only channel can be provisioned using the same equipment for dedicated transport of IP television. The passenger will gain access to all these services via the airline’s in-flight entertainment system or their own devices through Wi-Fi access points onboard the aircraft.

American Airlines In-Flight WiFi Internet

Aircell’s Gogo will be available to customers as a fee-based service in all cabins. Aircell will charge $12.95 on flights more than three hours, which include American’s Boeing 767-200 flights. Each paid Gogo session includes full Internet access. Cell phone and Voice over Internet Protocol (VOIP) services are not available.

Gogo turns an American Airlines flight into a Wi-Fi hotspot, enabling passengers to surf the Web, check any email, Instant Message, access a corporate VPN, and more. Once the aircraft has reached 10,000 feet, users can simply turn on their Wi-Fi enabled devices such as laptops, smartphones and PDAs, open their browsers and be directed to the Gogo portal page where they sign up and begin surfing. Gogo is powered by the Aircell air-to-ground (ATG) Broadband System, which runs over Aircell’s exclusive nationwide network. [source]

Delta Airlines In-Flight WiFi Internet

Delta is joining with Aircell®, a 17-year leader in airborne communications for business and commercial aviation, to install the company’s Mobile Broadband Network on the carrier’s domestic fleet. The system, Gogo™, will enable Delta customers traveling with Wi-Fi enabled devices, such as laptops, smartphones and PDAs, to access the Internet, corporate VPNs, corporate and personal e-mail accounts, as well as SMS texting and instant messaging services. Gogo will be available to customers for a flat fee of $9.95 on flights of three hours or less, and $12.95 on flights of more than three hours. [source]

Virgin America In-Flight WiFi Internet

Customized for Virgin America, the system is anticipated to allow guests to connect to the internet with the AirCell Broadband Service, using either their Red™ seatback video screens or their own wifi enabled portable gaming devices, laptops, PDAs or Smartphones. As such, in addition to the many entertainment choices currently offered by Red™ guests will be able to check and send web-email from their seatbacks through Red™’s TALK — the airline’s onboard chat system — using popular instant messaging services such as MSN®, Google® talk, Yahoo! ® Skype, and AIM®. [source]

Southwest Airlines In-Flight WiFi Internet

Southwest Airlines is pleased to announce its partnership with Row 44, and we intend
to deliver the highest bandwidth available to commercial airlines in the United States,” said
Dave Ridley, Southwest Airlines’ Senior Vice President of Marketing. “Southwest’s selection of
satellite technology will offer a more robust experience for more Customers per aircraft versus
other solutions available in the marketplace. [source]

Alaska Airlines In-Flight WiFi Internet

Alaska Airlines today announced it plans to launch inflight wireless Internet service next year based on Row 44’s satellite-based broadband connectivity solution. Alaska made the announcement in Toronto at the 28th Annual World Airline Entertainment Association Conference and Exhibition. The airline will test Row 44’s system on a next-generation Boeing 737 aircraft in spring 2008 and, based on the trial’s outcome, plans to equip its 114-aircraft fleet.

Unlike air-to-ground services, Row 44’s satellite-based system is designed to function over land, water and across international borders, enabling service throughout Alaska’s route system in Alaska, the Lower 48 states, Hawaii, Canada and Mexico. [source]

Filed under: WLAN/WiFi News | 1 Comment

Netstumbler for Linux

Netstumbler for Linux

Netstumbler for Linux NetStumbler (also known as Network Stumbler) is a free/”beggarware” tool for Windows that can detect WiFi/Wireless LANs using the 802.11b, 802.11a and 802.11g WLAN standards.

An alternative to Netstumbler that works on Linux is called Kismet and uses RFMON to passively detect networks.

Wireless Extension (WE) and Wireless Tools (WT)

If you only have basic wireless detection/scanning requirements on Linux you can use Wireless Extensions (WE) and Wireless Tools (WT) that are usually already included in most Linux distributions.

The Wireless Extension (WE) is a generic API allowing a driver to expose to the user space configuration and statistics specific to common Wireless LANs. The beauty of it is that a single set of tool can support all the variations of Wireless LANs, regardless of their type (as long as the driver supports Wireless Extension). Another advantage is these parameters may be changed on the fly without restarting the driver (or Linux).

The Wireless Tools (WT) is a set of tools allows manipulation of the Wireless Extensions (WE). They use a textual interface and are rather crude, but aim to support the full Wireless Extension. There are many other tools you can use with Wireless Extensions, however Wireless Tools is the reference implementation.

  • iwconfig manipulate the basic wireless parameters
  • iwlist allow to initiate scanning and list frequencies, bit-rates, encryption keys…
  • iwspy allow to get per node link quality
  • iwpriv allow to manipulate the Wireless Extensions specific to a driver (private)
  • ifrename allow to name interfaces based on various static criteria

Linux Wireless Tools Example

The examples below are from my Nokia N800 Internet tablet. It is running a Debian based Linux and has the Linux wireless tools.

Nokia N800 iwlist wlan0 scanning

Nokia N800 iwlist wlan0 scanning

Using iwconfig I can see which interfaces support the wireless extensions.

Nokia-N800-23-14:~# iwconfig
lo        no wireless extensions.

wlan0     IEEE 802.11b/g  ESSID:"venetian"
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:0B:85:FF:FF:FF
          Bit Rate=54 Mb/s   Tx-Power=19 dBm   Sensitivity=0/200
          RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=44/0  Signal level=-49 dBm  Noise level=-93 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:83  Invalid misc:0   Missed beacon:0

Nokia-N800-23-14:~#

In my case wlan0 will be used with Linux wireless tools to get similar information to what Netstumbler provides.

Results for iwlist wlan0 scanning command are below.

Nokia-N800-23-14:~# iwlist wlan0 scanning
wlan0     Scan completed :
          Cell 01 - Address: 00:0B:85:FF:FF:FF
                    ESSID:"venetian"
                    Mode:Master
                    Encryption key:on
                    Channel:11
                    Quality:43/0  Signal level:-51 dBm  Noise level:-94 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
          Cell 02 - Address: 00:0F:66:FF:FF:FF
                    ESSID:"linksys"
                    Mode:Master
                    Encryption key:off
                    Channel:6
                    Quality:10/0  Signal level:-84 dBm  Noise level:-94 dBm
          Cell 03 - Address: 00:A0:C5:FF:FF:FF
                    ESSID:""
                    Mode:Master
                    Encryption key:on
                    Channel:11
                    Quality:43/0  Signal level:-51 dBm  Noise level:-94 dBm
          Cell 04 - Address: 00:0B:85:FF:FF:FF
                    ESSID:"venetian"
                    Mode:Master
                    Encryption key:on
                    Channel:1
                    Quality:37/0  Signal level:-57 dBm  Noise level:-94 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK

Note: In the results above I have edited the MAC addresses of the access points.

Graphical User Interfaces for Wireless Tools on Linux

Many GUI configuration and management tools are available if you need a graphical view of wireless tools. Below is a screen shot of KWiFiManager, a set of KDE tools using Wireless Extensions.

KWiFiManager

KWiFiManager - GUI Interface for Wireless Tools

Filed under: How To Guides, WLAN Site Survey | 1 Comment

Windows Vista Netstumbler

Windows Vista and Netstumbler

Windows Vista NetstumblerNetstumbler isn’t officially supported on Windows Vista but several alternatives exist that provide similar or better information about wireless networks.

The quickest and simplest way to discover access points is by using the “netsh” command available by default in Windows Vista. The command returns text results for discovered wireless networks. Free tools that take the netsh results and display them in a graphical format are also available.

Netsh Windows Vista Shortcut

The easiest way to use the command is to create a desktop shortcut and run it as needed.

  1. Right click on Windows Vista Desktop and select New -> Shortcut
    Create Netsh Shortcut
  2. Type following in field and click Next

    cmd.exe /k netsh wlan show networks mode=bssid
    The “cmd.exe /k” portion of command will keep results window open until closed.

    netsh wlan show networks mode=bssid

  3. Save shortcut by clicking Finish

    Netsh Short Cut Name Show APs

  4. Run command by double clicking desktop shortcut

    Windows Desktop Shortcut

Netsh cmd vs Windows Vista Graphical Networking View

The netsh shows SSID, signal strength, channel, supported data rates, and access point MAC address (BSSID). Compare this to Windows Vista graphical information which only shows SSID and signal bars.

Netsh
netsh show BSSID results with SSID

Windows Vista
Windows Vista Show Wireless

netsh wlan show networks mode=bssid help

The help information for the command is below.

C:\Users\admin>netsh wlan show networks ?

Usage: show networks [[interface=]] [[mode=]ssid/bssid]

Parameters:

Tag Value
interface - Name of the interface which has this profile configured.
mode - Get detailed bssid information.

Remarks:

Shows the networks available to the system.
Parameter interface and bssid are both optional.

If interface name is given, only the networks on the given interface will be listed.
Otherwise, all networks visible to the system will be listed.

If mode=bssid is given then the visible bssids for each ssid
will also be listed. Otherwise only ssids will be listed.

Examples:

show networks interface="Wireless Network Connection"
show networks mode=Bssid
show networks

Filed under: How To Guides, WLAN Tools | no comments yet, your thoughts are welcome

Outdoor Wireless Planning Tool

Outdoor Wireless Planning Tool

Wireless Outdoor PlannerThis online tool can be used to plan and visualize outdoor wireless networks by plotting device locations and radio frequency (RF) propagation coverage on mapping tools. Radio frequency propagation visualization can be viewed as contours on Google Maps or 3D RF models in Google Earth.

The tool is currently beta software and is available at address below. Feedback and feature requests are welcome.

http://www.wlanbook.com/outdoor-wireless-planner/

How to Use Outdoor Wireless Planning Tool

I plan to add detailed instructions later but for now start by following a three step process – 1) find your location, 2) click on map to plot markers, and 3) view results in Google Earth.

Outdoor Wireless Planner

Radio Frequency Propagation Visualization on Google Maps

Currently the radio frequency propagation visualization in Google Earth and Google Map view is the same for all plotted points. This feature will be enhanced so that results are based on user entered data like radio power, frequency, antenna gain, distance, and most importantly terrain data that can be determined from mapping software.

Google Maps Wireless Coverage Visualization

Radio Frequency Propagation Visualization in Google Earth

The Google Earth portion of tool isn’t complete but when done will have the ability to view results with custom pan, tilt, range, and altitude values for location. See below for what the 3D view will look like and download a demo file to view results in Google Earth.

Google Earth Wireless Coverage Visualization

Feedback, Bug Reports, and Features Requests

Please comment in post below or send me a message via my contact form with feedback, bug reports, and feature requests. This software was tested on a Windows Vista PC, Internet Explorer 7, and 1280×800 screen resolution. I’m sure it will behave differently on other systems so when sending bug reports please let me know your operating system, browser version, and screen resolution.

Filed under: WLAN Design, WLAN Tools | no comments yet, your thoughts are welcome