Hi Alan,

PF will always keep the reg/unreg status to a NODE (aka 
PC/Phone/Smartphone) not a USER.  It is really important to understand 
the difference.

> What if the user logs off and
> another user logs on, but the device never changes state WRT the
> network? Does a signal/trap get generated in this case that causes a
> re-authentication to occur? If not, shouldn't it?
Two possibilities here.

If we use port-security, we do not "care" of if the machine is connected 
or not, and we do not know which user is connected on the machine 
itself.  Once the machine is authorized on the port on a certain VLAN, 
it will stay like this until the node is unregistered in PF.

If we use 802.1X, we know the user that authenticated to get port 
access, and every time an authentication happens, a RADIUS call is made 
with the proper attributes.  With this technology, we can do some more 
complex flows (ie. VLAN per Domain, VLAN per AD group, etc).  So, for 
example, if a user logout, and another login, we could potentially 
change the attributes of the NODE (likely the category), and return a 
different VLAN since a new user connected.

I hope it answers your questions!

-- 
Francois Gaudreault, ing. jr
[email protected]  ::  +1.514.447.4918 (x130) ::  www.inverse.ca
Inverse inc. :: Leaders behind SOGo (www.sogo.nu) and PacketFence 
(www.packetfence.org)

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