You seem to be mixing terms.

802.1x is a method of providing authentication to 802 networks (802.3, 
802.4, 802.11, 802.16, ...)    With 802.11, you
can distribute keying material to the supplicant (in 802.11, the STA) 
potentially on a per-session, per client basis, and,
if your AP is 'good enough', you can rekey the sessions often enough to 
make the known wep cracks ineffective.

AES is (just) an encryption algorithm. AES isn't going to be much fun 
without key distribution.  IPSec isn't much fun
without IKE, for nearly identical reasons.

I can only see a couple advantages to a combination of L2TP and IPSec.  
You can use IPSec  to secure the control
channel (using machine certificates),  used to negotiate and set up the 
L2TP connection. L2TP (and PPTP) have
notoriously bad security during the key exchanges.

After the session is authenticated and set up, you probably want all 
traffic tunneled/encrypted
using L2TP, not IPSec.   The advantage of  L2TP over IPSEC for things 
VPN is because L2TP
can support multiple protocols, doesn't have NAT problems, etc.

If you're not talking about this, but straight L2TP over IPSec, the 
only advantage I see is L2TP's
multi-protocol support, and by tunneling L2TP in IPSec, you would 
eliminate the security issues with
L2TP.


On Saturday, September 28, 2002, at 02:47 AM, evilbunny wrote:

> Hello all,
>
>   Hmm the more I read about 802.1x the less appealing it seems to be,
>   it seems it's an interim solution for wireless until they build math
>   co-processors into AP's to handle AES encryption.
>
>   Currently the best practice for secured connections I can see so far
>   is L2TP over IPSec...
>
>   However for authentication L2TP should suffice...
>
>   suggestions?
>   comments?
>
> -- 
> Best regards,
>  evilbunny                          mailto:[EMAIL PROTECTED]
>
> http://www.cacert.org - Free Security Certificates
> http://www.sydneywireless.com - Telecommunications Freedom
> <smime.p7s>

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