Lelio:
 
As you pointed out, it's not common, but WPA/AES is a valid combination.
You give up some smaller aspects of WPA2 that enhance key security, but you
still get all the cryptographic benefit of AES over TKIP.  On the other
hand, it's an odd combination and I would only recommend it for a
residential environment where there unique circumstances preclude full
WPA2-PSK.
 
I would definitely recommend option 2.  It's going to be the easiest to
support.  Otherwise you're going to have your users needlessly struggle to
find and/or implemented the WPA/2/TKIP and WPA/AES when they should just
pass those by.
 
Regards,
 
Frank

  _____  

From: Lelio Fulgenzi [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, December 12, 2006 8:20 AM
To: [email protected]
Subject: [WIRELESS-LAN] WPA & AES support


I'm just wondering what other people are thinking about WPA & AES support.
All the documentation (and what I understood) refers to AES as a WPA2
component, however, I've seen many wireless configuration screens that allow
for WPA and AES. Forums typically discount this to 'sloppy' programming,
however, where I still find that to be a 'stretch', I can see where that
might happen in a card that supports WPA2, but I've found it to be the case
in a card that only support WPA to see both TKIP and AES. My thought was
that this option was there for AES support on a WPA-PSK or home
implementation as I've seen some boxes advertise that.
 
Our choice (documentation and support wise) is to say either:

1.      Choose one of these options (in order of preference) with a note
saying sometimes not all options work and to go down the list until one
does: 


*       WPA2 + AES 

*       WPA2 + TKIP 

*       WPA + AES 

*       WPA + TKIP

2.      Choose one of the following options: 


*       WPA2 + AES 

*       WPA + TKIP

Just wondering if we are buying ourselves more support headaches trying to
support the odd auth/crypt types.
 
Comments?
 
----------------------------------------------------------------------------
----
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
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"I can eat fifty eggs." "Nobody can eat fifty eggs."
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