Architecture :: Access SessionState - Via App1 To SessionState From App2?

i'm interested to do the following - i geuss, i have no option to do that:

we have our "mainapplication" on a DB; we are tracking user-login status by switching a bit in the DB in the users data row.

we hvae a second application, the backend, which is the administration tool.

(the applications are put in seperate diretories on HD)

sometimes, we need to block/ban users. in some cases the users are logged in, when we "see them in action".

i'd like to build a button in the backend-application, which logss-out the user from the mainapplication.

for sure: i can access the same DB and switch the bit to "know" he's offline, but this will not kill the session on the mainapplication.

because: if a user is on/offline is also indicated by the session in the IIS. and as the IIS-session is active, the user may be already banned - but he will not be logged out automatically (and showing something like "you have been logged out because of a ban) one option would be to call the DB by each page-load to find out, if the user is logged on.