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Date:      Wed, 03 Sep 2008 12:37:28 -0700
From:      Sam Leffler <sam@freebsd.org>
To:        Matthias Apitz <matthias.apitz@oclc.org>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: WPA && associating with unknown SSID
Message-ID:  <48BEE778.4000503@freebsd.org>
In-Reply-To: <20080903190032.GA2372@rebelion.Sisis.de>
References:  <20080903113131.GA8697@rebelion.Sisis.de>	<48BEA791.6030406@freebsd.org> <20080903190032.GA2372@rebelion.Sisis.de>

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Matthias Apitz wrote:
> El día Wednesday, September 03, 2008 a las 08:04:49AM -0700, Sam Leffler escribió:
>
>   
>> Matthias Apitz wrote:
>>     
>>> Hello,
>>>
>>> I'm using WPA to connect to my various Wifi AP's (office, home, partner
>>> locations) and have them well configured in the wpa_supplicant.conf(5)
>>> file;
>>>
>>>       
>> >from time to time at home I encounter that it is associating with an
>>     
>>> unknown AP of my neighbourhood:
>>>
>>>
>>> # ifconfig iwi0
>>> iwi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>>        ether 00:13:ce:a1:e6:81
>>>        inet 192.168.2.3 netmask 0xffffff00 broadcast 192.168.2.255
>>>        media: IEEE 802.11 Wireless Ethernet autoselect (DS/11Mbps)
>>>        status: associated
>>>        ssid o2DSL_kJaR channel 1 (2412 Mhz 11g) bssid 00:19:cb:86:b3:84
>>>        authmode OPEN privacy ON deftxkey 1 wepkey 1:40-bit bmiss 10
>>>        scanvalid 60 bgscan bgscanintvl 300 bgscanidle 250 roam:rssi11g 7
>>>        roam:rate11g 5 protmode CTS roaming MANUAL
>>> # ifconfig iwi0 list scan
>>> SSID            BSSID              CHAN RATE   S:N     INT CAPS
>>> o2DSL_kJaR      00:19:cb:86:b3:84    1   54M  19:0    100 EP  
>>> xxxxxxxxxxxx    00:14:6c:44:aa:f6   11   54M  13:0    100 EP   WPA
>>>
>>> the network with SSID 'o2DSL_kJaR' is not im my
>>> /etc/wpa_supplicant.conf;
>>>
>>> how this is possible and how can I prevent this?
>>>  
>>>       
>> You must have a wildcard entry in your wpa_supplicant.conf file (i.e. 
>> one w/o an ssid specified).
>>     
>
> Thx for the idea, but I don't have any wildcard entry; I've checked the
> conf file and also wpa_cli says:
>
>   
>> list_networks
>>     
> network id / ssid / bssid / flags
> 0       santaclara      any
> 1       tarara  any     [CURRENT]
> 2       OCLCPICAUK      any
> 3       board_room      any
> 4       guagua  any
> 5       OCN-LAN any
> 6       ConnectionPoint any
>
> and:
>
> # fgrep network= /etc/wpa_supplicant.conf | wc -l
>        7
> # fgrep ssid=\" /etc/wpa_supplicant.conf 
>         ssid="santaclara"
>         ssid="tarara"
>         ssid="OCLCPICAUK"
>         ssid="board_room"
>         ssid="guagua"
>         ssid="OCN-LAN"
>         ssid="ConnectionPoint"
>
>   
So far as I know this should not happen.  It'd be useful to have a 
wpa_supplicant log that shows it associating to an ssid not listed in 
the config file.

    Sam




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