MJ,

You're correct,

mab is a cisco invented hybrid of mac authentication and 802.1x, so 802.1x
is a prerequisite for mab.

   -
   http://en.wikipedia.org/wiki/IEEE_802.1X#MAB_.28MAC_Authentication_Bypass.29
   -
   
http://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/identity-based-networking-services/config_guide_c17-663759.html#wp9000124


mab uses username: <mac addr> password: <encrypted mac addr>, and so it is
easily spoofable ( not secure at all ).

mac authentication is slightly different than 802.1x. Instead of both
username & password, only the calling-station-id is sent (client's mac
address) as the auth parameter.

   - https://technet.microsoft.com/en-us/library/dd197535%28v=ws.10%29.aspx


-earl


On Fri, Jun 5, 2015 at 3:52 AM, mourik jan heupink <[email protected]>
wrote:

> Hi Earl, list,
>
> Thanks for the links. I had read those already, but they seem to talk
> about EITHER mac or 802.1x on a port?
>
> I am under the impression that mab means: BOTH mac and 802.1x
> authentication at the same time on the same port...
>
> Additionally, I found this doc:
>
> http://www.breekeenbeen.nl/2010/06/23/mac-authentication-bypass-mab-on-hp-procurve-2600/
>
> In that post above, in the example, I don't see how 802.1x is activated...
>
> It seems to be only mac based config:
> "aaa port-access mac-based 1-48"
>
> Difficult stuff.
>
> MJ
>
> On 06/04/2015 02:16 PM, Earl Robinson wrote:
> > I used the PF ZEN guide to out-of-band enforcement to get a Cisco switch
> > configured for MAB (mac authentication bypass)
> >
> http://www.packetfence.org/downloads/PacketFence/doc/PacketFence_Out-of-Band_Deployment_Quick_Guide_ZEN-5.1.0.pdf
> >
> > I did a couple quick searches and came up with these HP docs which seem
> > to detail the same configuration on ProCurve switches :
> >
> > How to configure 802.1X authentication on ProCurve switches
> > http://h10032.www1.hp.com/ctg/Manual/c02642107.pdf
> >
> > How to configure MAC authentication on a ProCurve switch
> > http://h10032.www1.hp.com/ctg/Manual/c02628207
> >
> > Hopefully those will help
> >
> >
> > On Wed, Jun 3, 2015 at 12:48 PM, Louis Munro <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> >     On Jun 3, 2015, at 12:44 , heupink <[email protected]
> >     <mailto:[email protected]>> wrote:
> >
> >>     I'll look into that. An initial google search for 'mab procurve
> 5400'
> >>     returns surprisingly few results. Usually no good sign…
> >
> >     MAB may be a Cisco specific keyword.
> >
> >     I haven’t played with HP switches in a while now but I would be
> >     surprised if they did not have some kind of similar functionality.
> >
> >
> >     Regards,
> >     --
> >     Louis Munro
> >     [email protected] <mailto:[email protected]>  ::  www.inverse.ca
> >     <http://www.inverse.ca>
> >     +1.514.447.4918 x125 <tel:%2B1.514.447.4918%20x125>  :: +1 (866)
> >     353-6153 x125 <tel:%2B1%20%28866%29%20353-6153%20x125>
> >     Inverse inc. :: Leaders behind SOGo (www.sogo.nu
> >     <http://www.sogo.nu>) and PacketFence (www.packetfence.org
> >     <http://www.packetfence.org>)
> >
> >
>  
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