WEP encryption

[Chieu Dinh]

How do we debug the WEP encryption? Is there a CLI to display the WEP encryption key?

[Stephen Rodriguez]

There's not a way to show the WEP key, as it gets converted to hex and is not ascii.

as for debugs, debug dot11 events.  debug dot11 packets

Steve

[Leo Laohoo]

I think he wants to crack the key Steve.

[Chieu Dinh]

How do you check the wireless packet flow after you issue the command:

#debug dot11 dot11radio?

or

#debug dot11 packets?

Thanks

[Stephen Rodriguez]

issue term mon will let you see the packet flow in real time.

you can also set the buffer size and do logging buffered, then dump the buffer to read what happened.  Not real time but easier to read since it's not scrolling while you are trying to read it.

Is there a particular problem you are having?  With WEP, if the keys do not match, you'll still associate but traffic won't pass. 

Steve

[Chieu Dinh]

Thank you Steve. Yes. I am having the problem to associate with the root bridge. I have a non root bridge configured open authentication with the WEP keys. I checked all the WEP key are matched with the root bridge. I just want to see how does it associate with the root bridge with WEP enabled in real time.

[Stephen Rodriguez]

are you configuring all four keys or just the one marked as the transmit key?

When you are putting the jet in ate you using 0 or 7?

Steve

Sent from Cisco Technical Support iPhone App

[Chieu Dinh]

Thank you for response Steve

are you configuring all four keys or just the one marked as the transmit key?

>>> I configured all four keys. The first key is the transmitted key. It is the same for both root bridge and non root bridge.

I do have a VLAN. Therefore, the four keys is set in the VLAN

encryption key 1 size 128bit 7 #####key1#### transmit-key

encryption key 2 size 128bit 7 ####key2####

encryption key 3 size 128bit 7 ####key3####

encryption key 4 size 128bit 7 ####key4####

encryption mode ciphers wep128

encryption vlan 53 key 1 size 128bit 7 #####key1#### transmit-key

encryption vlan 53 key 2 size 128bit 7 ####key2####

encryption vlan 53 key 3 size 128bit 7 ####key3####

encryption vlan 53 key 4 size 128bit 7 ####key4####

encryption vlan 53 mode wep mandatory

When you are putting the jet in ate you using 0 or 7?

Thank you very much for all your helps

[Leo Laohoo]

How do we debug the WEP encryption? Is there a CLI to display the WEP encryption key?

Try this link.

[Chieu Dinh]

I dont want to crack it. I want to see if the WEP key is transmitted and match to another bridge.

Thank you for CLI debug, it is helps.

[Justin Kurynny]

Leo,

Hm.. link didn't work out right. Did you maybe mean this link?

Justin

[Leo Laohoo]

Link fixed Justin.