Re: [gentoo-user] Can't Decrypt WEP Packets After Upgrade From 2.6.23 to 2.6.25

[Eric Martin]

Drew Tomlinson wrote:

Ever since I upgraded my gentoo-sources kernel from 2.6.23 to 2.6.25, I can no longer see packets on my wireless network for any device other than my own. The tcpdump output looks like this:

   0x0000:  c211 5700 c393 1b7b 838f 366c 27c5 f97a  ..W....{..6l'..z
   0x0010:  5111 7d1a 1e33 bebd a432 ff30 5a35 e0ad  Q.}..3...2.0Z5..
   0x0020:  ba16 2b31 f1e9 d905 5967 f333 d3a1 4ba3  ..+1....Yg.3..K.
   0x0030:  1e32 0f18 fcc2

20:49:32.909144 00:12:bf:2a:2c:76 (oui Unknown) Unknown SSAP 0x10 > 00:1f:32:5f:fe:06 (oui Unknown) Unknown DSAP 0xc2 Unnumbered, disc, Flags [Final], length 44 20:49:32.912775 00:12:bf:2a:2c:76 (oui Unknown) Unknown SSAP 0x10 > 00:1f:32:5f:fe:06 (oui Unknown) Unknown DSAP 0xc2 Information, send seq 42, rcv seq 0, Flags [Response], length 204 20:49:32.916874 00:12:bf:2a:2c:76 (oui Unknown) Unknown SSAP 0x10 > 00:1f:32:5f:fe:06 (oui Unknown) Unknown DSAP 0xc2 Supervisory, Receiver not Ready, rcv seq 0, Flags [Response], length 169 20:49:32.976738 00:12:bf:2a:2c:76 (oui Unknown) Unknown SSAP 0x10 > 00:1f:32:5f:fe:06 (oui Unknown) Unknown DSAP 0xc2 Information, send seq 43, rcv seq 0, Flags [Response], length 64 20:49:33.047570 00:12:bf:2a:2c:76 (oui Unknown) > 00:1f:32:5f:fe:06 (oui Unknown), ethertype Unknown (0x05ec), length 1530: I've Googled for an answer and think that my problem is that I am unable to decrypt WEP packets for any device other than my own. This is a simple 64 bit WEP network in my home. Unfortunately I did not find anything that applied to my situation. One thing different about my new kernel config is that because I have a Broadcom card, I moved to the new b43 driver instead of the old b43_legacy driver. I am using version 4 firmware however I had the same problem with version 3 firmware. I was hoping that would fix it but no luck. I am also using the new MAC80211 stack instead of the older IEEE80211 stack.

I don't have much help to offer than go with WPA over WEP (especially WEP64). A guy at my LUG gave a presentation on hacking WEP and did it in under 1 minute. I went home that night and got WPA to work.

Any ideas on what I have done wrong?

Yes, turning on wep vs WPA ;)

Thanks,

Drew

Sorry the only answer is do it totally differently but nobody else replied so I figured I'd chime in.

--
Eric Martin
PGP fingerprint = D1C4 086E DBB5 C18E 6FDA  B215 6A25 7174 A941 3B9F

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