Aireplay (from Aircrack 2.41) + madwifi-ng (latest)

s1nz0r · 01-30-2006

Hi All,

Let me apologise in advance if this is a completely n00bish post and has been answered anywhere else. Information on madwifi-ng + aireplay 2.41 is extremely sparse (in fact to my knowledge non-existent).

I've been having some trouble with Aireplay from the Aircrack 2.41 Suite. I am running a Netgear WAG511 pcmcia card (Atheros Chipset) with latest madwifi-ng drivers. Overall I have no difficulty with other wifi applications (standard injection looks great and kismet-devel is running beautifully) I am however having a little difficulty with aireplay.

Problem 1:
When running a fake auth attack against certain APs, (aireplay -1 x) I get a error saying:

packet < 30 bytes

when tethereal shows that not to be correct and even shows the AP responding with what appears to be the next step of the association handshake.

Problem 2:
When running with -4 (chopchop) mode, I am receiving Deauths from 75% of target APs whether i am associated as a client (-h switch) or not. Could this possibly be an ACK related issue to do with throttling? I will force my card to have the fake MAC address and lower rate and update in another post (perhaps this will help?). I have only gotten "chopchop" mode to work with one AP so far (and that was a 'useless' "spanning tree" packet with no IP header -

).

Any other suggestions that I can try to prevent/fix these from happening? Hair being pulled out in clumps + gnashing of teeth!!! Thanks all in advance. Aircrack et al are pretty nifty.

regards and much appreciated...

s1nz0r · 01-31-2006

Have played around with transmit rate (ala iwconfig) and -x flags and am still getting the same issues (even with "-x 10"!). On those APs that i can associate with, deauths occur and then chopchop fails. On those where association is not necessary to perform chopchop, it works. Any ideas on how to correct this? Is it possible that i just have crap hardware that can not respond in the 300ms ACK window? I have not heard any such problems with this card before...

01-30-2006	#1 (permalink)
s1nz0r Registered Member Join Date: Jan 2006 Posts: 2	Aireplay (from Aircrack 2.41) + madwifi-ng (latest) Hi All, Let me apologise in advance if this is a completely n00bish post and has been answered anywhere else. Information on madwifi-ng + aireplay 2.41 is extremely sparse (in fact to my knowledge non-existent). I've been having some trouble with Aireplay from the Aircrack 2.41 Suite. I am running a Netgear WAG511 pcmcia card (Atheros Chipset) with latest madwifi-ng drivers. Overall I have no difficulty with other wifi applications (standard injection looks great and kismet-devel is running beautifully) I am however having a little difficulty with aireplay. Problem 1: When running a fake auth attack against certain APs, (aireplay -1 x) I get a error saying: packet < 30 bytes when tethereal shows that not to be correct and even shows the AP responding with what appears to be the next step of the association handshake. Problem 2: When running with -4 (chopchop) mode, I am receiving Deauths from 75% of target APs whether i am associated as a client (-h switch) or not. Could this possibly be an ACK related issue to do with throttling? I will force my card to have the fake MAC address and lower rate and update in another post (perhaps this will help?). I have only gotten "chopchop" mode to work with one AP so far (and that was a 'useless' "spanning tree" packet with no IP header - ). Any other suggestions that I can try to prevent/fix these from happening? Hair being pulled out in clumps + gnashing of teeth!!! Thanks all in advance. Aircrack et al are pretty nifty. regards and much appreciated...

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01-31-2006	#2 (permalink)
s1nz0r Registered Member Join Date: Jan 2006 Posts: 2	Have played around with transmit rate (ala iwconfig) and -x flags and am still getting the same issues (even with "-x 10"!). On those APs that i can associate with, deauths occur and then chopchop fails. On those where association is not necessary to perform chopchop, it works. Any ideas on how to correct this? Is it possible that i just have crap hardware that can not respond in the 300ms ACK window? I have not heard any such problems with this card before...