Network Stumbler v0.3.30

Marius Milner <>

This package contains Network Stumbler. It is still undergoing prerelease testing and is provided to you as a convenience. If you don't like it, or if you feel that it doesn't quite do what you want, you are free to delete it from your system.


Hardware Requirements

You must have one of the supported cards listed below.

Cards that work Cards that might work Cards that do not work
Network Stumbler 0.3.30 works on the following cards using the Hermes chipset:
  • Lucent Technologies WaveLAN/IEEE (Agere ORiNOCO)
  • Dell TrueMobile 1150 Series (PCMCIA and mini-PCI)
  • Avaya Wireless PC Card
  • Toshiba Wireless LAN Card (PCMCIA and built-in)
  • Compaq WL110
  • Cabletron/Enterasys Roamabout
  • Elsa Airlancer MC-11
  • ARtem ComCard 11Mbps
  • IBM High Rate Wireless LAN PC Card
  • 1stWave 1ST-PC-DSS11IS, DSS11IG, DSS11ES, DSS11EG
Other Hermes cards may work (they will appear as ORiNOCO on the device menu). Please let me know if your card is not listed but does work.

Many users have reported problems with the Buffalo Airstation (Melco) WLI-PCM-L11. This thread in the forums explains how you may be able to get it working in Windows 2000.

If you are using Windows XP, some of the cards listed in the "Cards that do not work" section may work.

The following cards are NOT SUPPORTED in this release:
  • 3com
  • Cisco
  • Compaq WL100
  • Dell TrueMobile 1100 Series
  • D-Link
  • IBM built-in cards
  • Intel
  • Intermec
  • Linksys
  • Netgear
  • Symbol
  • SMC
  • Sony built-in cards
  • US Robotics
  • Any 802.11a cards
  • Many others

I hope to get support for some of them in later releases.

Firmware Requirements

The WaveLAN firmware (version 4.X and below) does not work with Network Stumbler. If your card has this version, you are advised to upgrade to the latest version available from This will also ensure compatibility with the 802.11b standard.

Operating System Requirements

Operating Systems that work Operating Systems that might work Operating Systems that do not work
  • Windows 2000
  • Windows 98
  • Windows 95
  • Windows Me
  • Windows XP
  • Windows NT 4.0 has not been tested.
  • Windows CE (use MiniStumbler instead)
  • Non-Windows OSes

Other Requirements and Compatibility Issues

If you have a system that should work according to these requirements, but does not work, please contact me at the address above. 

Troubleshooting Mini-FAQ

Q1. Network Stumbler reports "No wireless card found". Why?
A1. Please check the compatibility lists above.
Q2. Why doesn't Network Stumbler see the access point right next to my machine?
A2. Perhaps the access point is configured not to respond to broadcast probes. Most manufacturers call this "disable broadcast SSID"; Agere calls it "closed".
Q3. What 802.11 frames does Network Stumbler send?
A3. It sends out a broadcast probe about once a second, and reports the responses. When it is connected to a BSS network, it will attempt to get the name of the access point. When it is connected to an IBSS network, it will try to get the names of all locally visible peers.
Q4. Does Network Stumbler listen for beacons?
A4. Not this version.
Q5. Does Network Stumbler put my card into promiscuous mode?
A5. Not this version.
Q6. Why does Network Stumbler disconnect me from the network?
A6. If you have "Options->Reconfigure card automatically" checked, it will configure your card with a profile that uses a null SSID and BSS mode (It will not change your WEP settings). Also, when it sees another network that has a better signal than the one you're connected to, it may disconnect the current connection so that it can get the AP name on the other network.
Q7. Does Network Stumbler detect ROR and COR installations?
A7. No. They are not fully compliant with 802.11b and therefore are not visible to Network Stumbler.
Q8. Should I allow Windows XP to manage my wireless settings?
A8. Probably not. When you are not connected to a network, XP will cycle through your favorite network names attempting to connect to them. While this is happening, Network Stumbler may not see all available networks.
Q9. When will you support wireless card X? When will you add new feature Y that I want?
A9. I work on this in my spare time. I can make no commitment to dates for new features or bug fixes.

What's new in this release

Version 0.3.30 (August 18, 2002):

Version 0.3.23 (February 14, 2002):

Version 0.3.22 (August 6, 2001):

Version 0.3.21 (July 16, 2001):

Version 0.3.20 (July 13, 2001):

Version 0.3.10 (July 12, 2001):

Version 0.3.00 (June 19, 2001):

Version 0.2.00 (May 16, 2001):

Version 0.1.00 (May 5, 2001):

Short and Simple User License

This program is BeggarWare. You may use it without any formal obligation to the author, except that you may not sell it to anybody.

If you like the program and feel that you've received some benefit from it, and want to help me develop future versions, then you may pay as much as you feel the program is worth. If you are using this as part of your work, you are encouraged to help - particularly if it has alerted you to security problems. You are not obligated to pay for it.

You can pay by going to and making a payment to If you've never signed up with PayPal then put me in as the person who referred you. Alternatively you can help by sending me hardware that could work with Network Stumbler but doesn't.

This tool is a two-edged sword. If you use it for defense, the author is not responsible for any damage that you may receive. If you use it for attack, the author is not responsible for any damage that you may cause.

The author reserves the right to change this license agreement as he sees fit, without notice.