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40 bit WEP vs 64 bit WEP

 
 
Johann Folkestad
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      09-09-2003, 10:10 AM
What is the difference ? We have several Cisco 350/1200 ap's and use static
40 bit wep key (10 hexadecimal digits (0-9, a-f, or A-F).

But we have several different clients(SMC, Belkin etc.) Theese clients does
not have a 40 bit option but a 64 bit option, but it seems to be the same as
Ciscos 40(10 hexadecimal digits (0-9, a-f, or A-F).

The problem is that the clients can't authenticate to the AP's with the 64
bit WEP. What can be the problem ??

Regards
Johann Folkestad


 
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10two11
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      09-09-2003, 10:47 AM
Cisco, being Cisco have decided that they will only support 40 or 128-bit
WEP, whilst others will only do 64 or 128! IF your client cards can not
perform 128-bit then I'm afraid you will have to either replace the AP's or
the client cards.

If you have Cisco AP's I would recommend that you get Cisco 350 Client
cards, either PCMCIA or PCI that way you will be able to take advantage of
Ciscos advanced features, etc.

Mike.
"Johann Folkestad" <(E-Mail Removed)> wrote in message
news:bjk8u2$8i9$(E-Mail Removed)...
> What is the difference ? We have several Cisco 350/1200 ap's and use

static
> 40 bit wep key (10 hexadecimal digits (0-9, a-f, or A-F).
>
> But we have several different clients(SMC, Belkin etc.) Theese clients

does
> not have a 40 bit option but a 64 bit option, but it seems to be the same

as
> Ciscos 40(10 hexadecimal digits (0-9, a-f, or A-F).
>
> The problem is that the clients can't authenticate to the AP's with the 64
> bit WEP. What can be the problem ??
>
> Regards
> Johann Folkestad
>
>



 
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Selar Rao
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      09-09-2003, 11:36 AM
The terms 40 bit WEP and 64 bit WEP are used interchangeably here.

The 40 bit portion refers to the 40 bits (10 hex digits) that are the shared
portion of the key, the remaining portion of the key 24 bits is generated
randomly by the sending station as an IV (Initialisation vector) and
appended to the user defined 40 bit key to get the full 64 bits.

So, if you attempt to define a 64 bit WEP key its not going to work, because
then it becomes 64+24 bit WEP which doesn't exist.

"Johann Folkestad" <(E-Mail Removed)> wrote in message
news:bjk8u2$8i9$(E-Mail Removed)...
> What is the difference ? We have several Cisco 350/1200 ap's and use

static
> 40 bit wep key (10 hexadecimal digits (0-9, a-f, or A-F).
>
> But we have several different clients(SMC, Belkin etc.) Theese clients

does
> not have a 40 bit option but a 64 bit option, but it seems to be the same

as
> Ciscos 40(10 hexadecimal digits (0-9, a-f, or A-F).
>
> The problem is that the clients can't authenticate to the AP's with the 64
> bit WEP. What can be the problem ??
>
> Regards
> Johann Folkestad
>
>



 
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