[comp.os.msdos.programmer] LAN access control programs

ccastje@prism.gatech.EDU (John Adair) (08/30/90)

How do those access control programs work?  The ones that limit the number
of people that can simultaneously access an application, as seen in this
month's PC Magazine.  They seem to be small TSR's that read configuration
files from a server.  I can see writing a quick and dirty program that
checks a number in a file on ther server, but what if a workstation
gets rebooted, etc. without 'checking' the software back in, to let
the server know it is no longer running it?  Does the server have to poll
the workstations that have 'checked out' a copy of the software?  Is there
a shareware/pd version of this type of program?

John Adair   :  ccastje%prism@gatech.edu : ccastje%prism.gatech.edu.BITNET
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