WIFI datapacket analyser Home
Products
WinAirsnort Release 2
Coming soon...
WinAirsnort Mirror Site
Latest News
August, 31st - 2005

We are proud to announce that WinAirsnort Outdoor Premium is now released and available for purchase ! WinAirsnort 2 includes now many new features and enhancements for the 802.11g WiFi network.
We recommend that everyone upgrade to the latest version and benefit the latest Wifi environment 802.11g.
Newsletter Subscription
Subscribe to our newsletter and receive news about product updates and new releases.
Awards & Reviews
"WinAirsnort's abilities aren't groundbreaking -– security experts know all too well that wireless networks can be easily accessed and monitored by outsiders. But a fully featured tool to facilitate password-grabs wasn't readily available until this past weekend, when WinAirsnort was released on the Internet"
-- John Freelanz, EU

Technical Notes on hardware and software compatibility (Wireless 802.11b and 802.11g)

When installing WinAirsnort Outdoor Premium Release 2 for your wireless adapter, you should normally follow the instructions that are given in your Driver Installation Guide. However, there are important technical notes on some of the supported adapters. In the package that is provided with WinAirsnort, the following drivers are present :

New Atheros driver 3.0,
Atheros AR5000 Driver,
Agere Driver,
Realtek Driver,
Symbol SYM24 Driver.

Some cards are not recognized by the Windows drivers above, even though they have the correct chipset. In this case, open the hardware manager, select your card, "Update the driver", select "Install from a specific location", select "Don't search, I will choose the driver to install", click "Have disk", set the path to where the driver is located by default (C:\Program Files\WinAirsnort\drivers) then uncheck "Show compatible hardware", and finally choose the driver from the source provided. Check "Yes" and update the driver with the one provided with the package and run WinAirsnort.

In this section, you can find the answers to commonly asked questions, and other supporting information for WinAirsnort. For any other support queries, you are welcome to contact us directly.

WinAirsnort - Frequently Asked Questions
Q. What is WinAirsnort used for ? Is it a solution for my wireless network ? What is the improvement of this tool regarding other WinPcap, Packetyzer, Ethereal etc..?
WinAirsnort 2.0 captures and analyzes network packets on wireless networks. It gathers information about data passing through your WiFi hardware card that is set on a "RF monitor mode" and decodes the analyzed data, that means the WEP and WPA key may be recovered. Ethereal, WinPcap, Packetyzer, and derivated tools on Windows used to dump wireless traffic are less powerful than WinAirsnort 2.0 because the wireless card cannot be passed automatically on monitor mode. The power of WinAirsnort is to put automatically the wireless "monitor mode" card using hexadecimal address, to provide the user with a decryption algorithm with an enhanced windows graphical interface.
if you want to improve the security and integrity of your wireless network, and protect against theoretical attacks, WinAirsnort is made for you.

Q. What does mean the "monitor mode" ?
The RF monitor mode allows the card to capture all packets of all SSID's from the currently selected channel. So in order to capture all traffic that the adapter can receive, the adapter must be put into this mode. This way, WinAirsnort is able to collect packets from a specific channel without ever needing to transmit any packets. Therefore, WinAirsnort can attempt to find the WEP key associated with that access point.

Q. When I use WinAirsnort, I am not able to use my wireless network to create outbound or inbound connections, TCP or UDP, everything seems to be "frozen".
A. This is normal and your wireless card is passed on RF monitor mode. Your machine is not able to use that wireless adapter for network traffic while listening with WinAirsnort. You may stop the packet analyzer (Shift-T) and recover a normal mode for your wireless card.

Q. Do I need special hardware to use WinAirsnort for Windows ?
A. You need a compatible wireless adapter, this is the only hardware you need. You must also install a special driver for your adapter. All necessary drivers come with WinAirsnort. Once this driver has been installed, your adapter will be put in passive, monitoring mode and will no longer be able to communicate with other wireless hosts or access points. To restore the standard functions of your adapter, you would need to roll back to the original adapter's driver, supplied by the vendor. If you would like to preserve your wireless connectivity while using WinAirsnort, consider installing two wireless adapters, one of which would be used for monitoring, while the other would perform standard network functions.

Q. My card is not on your list of supported hardware. What are my options?
A. There are many hardware vendors that use Prism 2/2.5/3 chipsets (we currently support primarily this chipset). Naturally, we cannot test all of these cards. If your PCMCIA or PCI card is based on the Prism 2/2.5/3 chipset and you are an advanced user who doesn't mind some testing, please follow this link, there is a good chance that your card will work with the existing driver. If your card is NOT based on the Prism 2/2.5/3 chipset, you will have to wait until we implement the support for other chipsets, however we cannot give any guarantees or time estimates. Finally, if you don't want to wait, you may want to buy a compatible card, as they are not terribly expensive these days.

Q. I launched WinAirsnort, selected the wireless card then selected the channel on automatic scanning mode, started capturing, but no packets are displayed. Please Help !
A. It is probably due to the driver of your wireless card. Some cards are not recognized by the Windows drivers, even though they have the correct chipset. In this case, open the hardware manager, select your card, "Update the driver", select "Install from a specific location", select "Don't search, I will choose the driver to install", click "Have disk", set the path to where the driver is located by default (C:\Program Files\WinAirsnort\drivers) then uncheck "Show compatible hardware", and finally choose the driver from the source provided. Check "Yes" and update the driver with the one provided with the package and run WinAirsnort.

Q. Does WinAirsnort run on multi-processor computers?
A. Yes, it does.

Q. Under Windows 2000/XP I'm often logged on as a user without administrative privileges. Do I have to log off and then re-logon as the administrator to be able to run WinAirsnort ?
A. Yes, Administrators should have privileges to use WinAirsnort, as the wireless card is passed on RF Monitor Mode... That's All !