Date: Wed, 03 Sep 2008 20:49:42 +0200 From: Pietro Cerutti <gahr@FreeBSD.org> To: Sam Leffler <sam@freebsd.org> Cc: freebsd-hackers@freebsd.org, Matthias Apitz <matthias.apitz@oclc.org> Subject: Re: WPA && associating with unknown SSID Message-ID: <48BEDC46.7090502@FreeBSD.org> In-Reply-To: <48BED635.5010100@freebsd.org> References: <20080903113131.GA8697@rebelion.Sisis.de> <48BEA791.6030406@freebsd.org> <48BEB687.5050308@FreeBSD.org> <48BED635.5010100@freebsd.org>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Sam Leffler wrote: | Pietro Cerutti wrote: |> -----BEGIN PGP SIGNED MESSAGE----- |> Hash: SHA512 |> |> Sam Leffler wrote: |> | 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). |> |> Not necessarily. If you bring up a wlan interface and don't specify |> anything, it will automatically associate with the first open AP it |> finds. |> |> I don't know if it's to be considered a feature or a bug. I've been |> worried by this sometimes, but honestly not enough to really care.. |> |> Anyway, it happens... |> | | He was talking about wpa_supplicant selecting an arbitrary AP. If you | have a device marked up then the system will handle ap selection+join | but if wpa_supplicant is running then it marks the interface in "manual | roaming mode" which stops that behaviour. What if you bring up a device with "WPA" in its rc.conf ifconfig line? | | Sam | - -- Pietro Cerutti gahr@FreeBSD.org PGP Public Key: http://gahr.ch/pgp -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEAREKAAYFAki+3EUACgkQwMJqmJVx944m6QCeK9yPcIjjHKx1b3sFDy0feHQd KCEAoJmUx9VEuKL/e+y69auTLhe8sei2 =TH4n -----END PGP SIGNATURE-----
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