WEP and Aircrack 2.1

ThunderRiver · 04-10-2005

I have been trying to analyze my own little wireless network shared by about 10 people.

It is a Microsoft MN-500 802.11b wireless router with a 128bit WEP key.
In order to speed up the cracking process, I used one laptop with Asante 802.11g card (TI chipset) to perform the attack (ICMP flood targeting the router at 192.168.2.1)

I have another laptop with Aircrack 2.1 (all the necessary AiroPeek NX driver and etc are installed). That laptop has the 3Com 802.11 a/b/g XJack card 3CRPAG175 with (Atheros chipset).

At first, I only collected a little over 600,000 IVs using airodump.. and proceeded with aircrack. After about 15 min, it says that there is "no luck, sorry." I thought maybe I need more IVs, so I went ahead start over and collected 1 million IVs. I used aircrack on these 1 million+ unique IVs, and after 15 min, I get the same result again.

Please note that I used NetStumbler 0.4 to verify the channel that my wifi router is using, and I am sure that 99% of the IVs I have collected are from my router. The near by AP is 802.11g with WPA, so I know aircrack will ignore them by default.

How much luck does it really get invovled with cracking the WEP key?

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