Re: 802.11 WPA and wpa_supplicant

From: Pawel Worach (pawel.worach_at_telia.com)
Date: 12/31/04

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    Date: Fri, 31 Dec 2004 13:56:50 +0100
To: Chen Lihong <d9364104@mail.nchu.edu.tw>

    Chen Lihong wrote:
    > I am using wpa_supplicant 0.3.2.
    > I can associated and authenticated with my AP with WPA/TKIP/1X-KEY-MGMT.
    > The hosts that at wired side can send packets to my FreeBSD station, but
    > wired hosts can not receive any station's packets.
    > Then, I use AiroPeek to capture wireless packets. I saw that any data
    > packet sent by wired side is encrypted, and station can decrypte that
    > well.
    > When station reply or send any packet it is not encrypted, at this time
    > AP may drop the packet.
    >

    I think I see the same problem, enabling 802.11 and ath debugging
    yields this "kernel: [00:11:95:3a:46:39] no default transmit key".
    I have no idea how my AP can give me an IP address but I still can't
    send any traffic. This was using WPA-PSK/TKIP with wpa_supplicant
    0.3.0.

    Try enabling some debugging and check if you see the same thing:
    sysctl dev.ath.0.debug=0x20000
    sysctl net.wlan.0.debug=0x10001000

    Full kernel debug output:
    kernel: ath_key_update_begin:
    kernel: ath_key_delete: delete key 0
    kernel: ath_key_update_end:
    kernel: ath_key_update_begin:
    kernel: ath_key_delete: delete key 1
    kernel: ath_key_update_end:
    kernel: ath_key_update_begin:
    kernel: ath_key_delete: delete key 2
    kernel: ath_key_update_end:
    kernel: ath_key_update_begin:
    kernel: ath_key_delete: delete key 3
    kernel: ath_key_update_end:
    kernel: ath_init: if_flags 0x8903
    kernel: ath_stop_locked: invalid 0 if_flags 0x8903
    kernel: ath_initkeytable: reset key 0
    kernel: ath_initkeytable: reset key 1
    kernel: ath_initkeytable: reset key 2
    kernel: ath_initkeytable: reset key 3
    kernel: ieee80211_newstate: INIT -> SCAN
    kernel: ieee80211_newstate: SCAN -> SCAN
    [more scanning]
    kernel: ieee80211_newstate: SCAN -> SCAN
    kernel: [ff:ff:ff:ff:ff:ff] send probe_req on channel 10
    kernel: ath_start: ignore data packet, state 1
    last message repeated 2 times
    kernel: ath0: received probe_resp from 00:11:95:3a:46:39 rssi 32
    kernel: ath0: received beacon from 00:11:95:3a:46:39 rssi 32
    kernel: ath0: received beacon from 00:11:95:3a:46:39 rssi 30
    kernel: ath_key_update_begin:
    kernel: ath_key_update_end:
    kernel: ieee80211_newstate: SCAN -> AUTH
    kernel: [00:11:95:3a:46:39] send auth on channel 10
    kernel: ath_staath_start: ignore data packet, state 2
    kernel: rt: ignore data packet, state 2
    kernel: ath_start: ignore data packet, state 2
    kernel: ath0: received auth from 00:11:95:3a:46:39 rssi 28
    kernel: ieee80211_newstate: AUTH -> ASSOC
    kernel: [00:11:95:3a:46:39] send assoc_req on channel 10
    kernel: ath_start: ignore data packet, state 3
    last message repeated 2 times
    kernel: ath0: received assoc_resp from 00:11:95:3a:46:39 rssi 28
    kernel: ieee80211_newstate: ASSOC -> RUN
    kernel: ath0: associated with 00:11:95:3a:46:39 ssid "Unknown10" channel 10
    start 36Mb
    kernel: ath_key_update_begin:
    kernel: ath_keyset_tkip: [00] TKIP 2135386f071435017a6381ace441f9de mac
    00:00:00:00:00:00 mic f536ed0931076b74
    kernel: ath_keyset_tkip: [32] TKIP 2135386f071435017a6381ace441f9de mac
    00:11:95:3a:46:39 mic 2ea713b61a53cdc2
    kernel: ath_key_update_end:
    kernel: ath_key_update_begin:
    kernel: ath_keyset_tkip: [02] TKIP fe34c355fc29db8723c490390296706a mac
    00:00:00:00:00:00 mic 729fa3ee38c77f87
    kernel: ath_key_update_end:
    kernel: [00:11:95:3a:46:39] TKIP replay detected <rsc 0, csc 0>
    kernel: [00:11:95:3a:46:39] no default transmit key
    kernel: [00:11:95:3a:46:39] no default transmit key
    dhclient: New IP Address (ath0): 192.168.10.102
    dhclient: New Subnet Mask (ath0): 255.255.255.0
    dhclient: New Broadcast Address (ath0): 192.168.10.255
    dhclient: New Routers: 192.168.10.1
    kernel: [00:11:95:3a:46:39] no default transmit key
    last message repeated 2 times 

    -- 
Pawel
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