My understanding is that WEP & TKIP are not allowed in the 802.11n standard. 
Only open or AES.


Bruce Osborne
Liberty University

-----Original Message-----
From: Cortes, Diana [mailto:dcor...@miami.edu] 
Sent: Wednesday, December 30, 2009 11:06 AM
Subject: Re: Encryption and Authentication

If I am not mistaken, the 802.11n standard requires CCMP/AES if encryption
is to be used at all. Hence, users are being bumped off the 11n rates when
they use TKIP.

We are also exploring our options for deploying 802.1X/EAP in our current
wireless environment and we considered using EAP-PEAP so that Windows users
could use the native supplicant. The problem with this is that the Windows
supplicant sends the username in the clear in the outer tunnel during the
first stages of authentication. Because of this we are now considering using
EAP-TTLS with a third-party supplicant in order to provide that extra layer
of security.


Diana Cortes, CISSP, CWNA
University of Miami
IT - Telecommunications


-----Original Message-----
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:wireless-...@listserv.educause.edu] On Behalf Of Voll, Toivo
Sent: Wednesday, December 23, 2009 6:37 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Encryption and Authentication

Your choices may be limited if you plan to run 802.11n. At least Cisco reads
the specs as mandating that you must do WPA2 / AES on 802.11n, other types
(TKIP, WPA) will bump you off 802.11n rates. 

Also consider what your user population is. XP may need a hotfix applied to
do WPA2. A lot of older systems, WVoIP phones, barcode scanners,
Crestron-type room controls etc. may be limited to WEP or WPA.

--
Toivo Voll
Network Administrator
Information Technology Communications
University of South Florida



-----Original Message-----
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:wireless-...@listserv.educause.edu] On Behalf Of David Blahut
Sent: Wednesday, December 23, 2009 14:25
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Encryption and Authentication

Greetings,

We are beginning to deploy encrypted wireless and I am looking for some 
words of wisdom.  Mainly what method you used and what reasons as to why 
you chose said method or any reason you wish you had not.

We have looked at many of the different flavors of EAP but are unsure of 
any clear advantage of one over the other.

We are a Cisco LWAPP shop with Cisco ACS playing the role of RADIUS with 
open LDAP in the back-end.

Any advice would be helpful; any thing to look out for, any gotchas, any 
show stoppers, and any success stories.

Thanks,
David

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