Thank you Dana--even though this post got accidently mixed in with this
thread. I'm somewhat of a NG veteran, and should know better. I'll check
out your link.
Thanks again,
--
Curt
Windows Support Center
www.aumha.org
Practically Nerded,...
http://dundats.mvps.org/Index.htm
"Dana" <raff242@yahoo.com> wrote in message
news:83ccf$46e59d9e$944e306e$25882@STARBAND.NET...
|
| "Curt Christianson" <curtchristnsn@NOSPAM.Yahoo.com> wrote in message
| news:13eb70s2nhaosdc@corp.supernews.com...
| > Good afternoon,
| >
| > Can somebody recommend a good "wireless sniffer" to see what's running
in
| > my
| > neighborhood? I'm running XP SP2. I'm currently using "Netstumbler" as
| > it
| > shows my wi-fi S/N ratio. Is NetStumbler good enough?
| >
| > TIA for your time,
|
| I like it.
| This link below also shows a neat device that I use. Of course a spectrum
| analyzer and protocol analyzer is also reccomended. But these high priced
| devices are not needed for casual use.
|
http://www.thinkgeek.com/gadgets/electronic/80ce/
| >
| > --
| > Curt
| >
| > Windows Support Center
| >
www.aumha.org
| > Practically Nerded,...
| >
http://dundats.mvps.org/Index.htm
| >
| > "Jeff Liebermann" <jeffl@comix.santa-cruz.ca.us> wrote in message
| > news:f6krd3ho0l3dta7vnp8qoircm6eo08bv5h@4ax.com...
| > | On Tue, 04 Sep 2007 20:25:17 -0000, StandardGreen
| > | <StandardGreen@gmail.com> wrote:
| > |
| > | >When I look at available wireless networks, Windows XP differentiates
| > | >between the WLAN and any nearby ad-hoc networks. How? I'm assuming
| > | >that there is some kind of identifying bit in the packets.
| > |
| > | The information is in IEEE 802.11-1999 specs found at:
| > | <http://standards.ieee.org/getieee802/802.11.html>
| > | Section 5.6 explains the difference between AdHoc and Infrastructure
| > | modes. The problem is that the IEEE calls them IBSS (adhoc) and ESS
| > | (infrastructure) modes. A client bridge is also known as an STA.
| > | Reading IEEE specs turns my brain to mush. Therefore, I suggest you
| > | digest the technobabble and acronyms in small bites.
| > |
| > | Also see:
| > | <http://grouper.ieee.org/groups/802/11/Tutorial/>
| > |
| > | The info is in the probe response frame (which also supplies the SSID)
| > | as in 7.2.3.9. Specifically, it's in the IBSS (adhoc) Parameter Set.
| > | If it's an ESS (infrastructure) access point that's responding, the
| > | field is blank.
| > |
| > | It might be helpful if you try a wireless sniffer and looked at the
| > | packets involved. See Wireshark at:
| > | <http://www.wireshark.com>
| > |
| > | >Furthermore, to those that know the answer to the question, where do
| > | >you learn this? I'd like to find your sources so I can get tips on
| > | >finding this stuff out for myself.
| > |
| > | A more simplified list of frame types can be found at:
| > | <http://www.wi-fiplanet.com/tutorials/article.php/1447501>
| > |
| > | --
| > | # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
| > | # 831-336-2558
jeffl@comix.santa-cruz.ca.us
| > | #
http://802.11junk.com jeffl@cruzio.com
| > | #
http://www.LearnByDestroying.com AE6KS
| >
| >
|
|
How does a computer differentiate between ad-hoc and infrastructure networks? 
Linear Mode
