[TYPO3-dev] "How" Fe-Users got Authentificated

[Steffen Ritter]

Hey list,
I'm currently searching for the following:
I wrote my own auth service, for authenticating net-users over 
ip/mac-Adress combination which works fine so far.
Now we want to add functionalities to allow Users to sign in, if they 
are not in the network. F.E. connected by VPN oder maybe simply watching 
the page over internet from another location.
For this I could show a login if users not authentificated. But I also 
would need a logout button for this case. Since ip/mac-authentificated 
users cannot logout (they would be logged in while loading the logout 
page again) there should not be a Logout button for them.
So I need to check which service granted users rights. Is there any 
place in TSFE where this is stored? Or where should be the place I can 
store it.
My idea was to let my Service store a information such as macauth=1 in 
TSFE where authinfos are stored. Bzt what is the "right" way to do that? 
Simply add a field to the users record which I can could check with TS 
conditions or are there any custom-configuration arrays in TSFE Object 
which are ceckable by conditions and may be set by auth service?

kind regards

Steffen