Re: How to scan for wifi hotspots?

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On Sat, 2004-12-25 at 13:59 -0500, Scot L. Harris wrote:
> On Fri, 2004-12-24 at 17:08, Timothy Murphy wrote:
> > Scot L. Harris wrote:
> > 
> > > try
> > > 
> > > /sbin/iwlist scan
> > 
> > sudo iwlist scan
> > lo        Interface doesn't support scanning.
> > eth0      Interface doesn't support scanning : Operation not supported
> 
> If it was supported you would have seen something like this:
> 
> eth0      Scan completed :
>           Cell 01 - Address: 00:0F:3D:3F:1D:CC
>                     ESSID:""
>                     Mode:Master
>                     Encryption key:on
>                     Channel:6
>                     Quality:127/0  Signal level:-82 dBm  Noise
> level:-209 dBm
>           Cell 02 - Address: 00:0C:41:AC:F9:50
>                     ESSID:"linksys"
>                     Mode:Master
>                     Encryption key:off
>                     Channel:6
>                     Quality:123/0  Signal level:-86 dBm  Noise
> level:-209 dBm
>           Cell 03 - Address: AA:50:23:35:5F:4E
>                     ESSID:""
>                     Mode:Ad-Hoc
>                     Encryption key:on
>                     Channel:11
>                     Quality:209  Signal level:0  Noise level:47
> 
> 
> Cell 1 and 2 are access points, Cell 3 is a computer system.  Cell 2
> most likely could be used to establish a connection to the Internet with
> since they don't have wep enabled and you have the ESSID.  Someone did
> not configure their linksys access point.  Cell 1 appears to have
> security enabled.
> 
> But again, if you are using ndiswrappers this probably won't work.  
> 

I am using ndiswrapper with an airlink adapter and I get this with
iwlist scan

[jeff@bluebird jeff]$ /sbin/iwlist scan
lo        Failed to read scan data : Operation not supported

eth0      Failed to read scan data : Operation not supported

eth1      Scan completed :
          Cell 01 - Address: 00:12:17:04:5F:FA
                 ESSID:"jeff"
                 Mode:Managed
                 Frequency:2.437GHz
                 Quality:1/1  Signal level:-40 dBm  Noise level:-200 dBm
                 Encryption key:on
                 Bit Rate:1Mb/s
                 Bit Rate:2Mb/s
                 Bit Rate:5.5Mb/s
                 Bit Rate:11Mb/s
                 Bit Rate:18Mb/s
                 Bit Rate:24Mb/s
                 Bit Rate:36Mb/s
                 Bit Rate:54Mb/s
                 Extra:bcn_int=100


cell 01 is my access point.



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