Hello I do have a free radius. It uses system authentication (unix users) Heres my radiusd.conf excerpt <nabble_embed> unix { # # Cache /etc/passwd, /etc/shadow, and /etc/group # # The default is to NOT cache them. # # For FreeBSD and NetBSD, you do NOT want to enable # the cache, as it's password lookups are done via a # database, so set this value to 'no'. # # Some systems (e.g. RedHat Linux with pam_pwbd) can # take *seconds* to check a password, when th passwd # file containing 1000's of entries. For those systems, # you should set the cache value to 'yes', and set # the locations of the 'passwd', 'shadow', and 'group' # files, below. # # allowed values: {no, yes} cache = no # Reload the cache every 600 seconds (10mins). 0 to disable. cache_reload = 600 # # Define the locations of the normal passwd, shadow, and # group files. # # 'shadow' is commented out by default, because not all # systems have shadow passwords. # # To force the module to use the system password functions, # instead of reading the files, leave the following entries # commented out. # # This is required for some systems, like FreeBSD, # and Mac OSX. # passwd = /etc/passwd shadow = /etc/shadow group = /etc/group # # The location of the "wtmp" file. # This should be moved to it's own module soon. # # The only use for 'radlast'. If you don't use # 'radlast', then you can comment out this item. # radwtmp = ${logdir}/radwtmp } </nabble_embed> and my users file is this: <nabble_embed> DEFAULT Auth-Type = System Simultaneous-Use = 1, Fall-Through = 1 </nabble_embed> Ive configured my clients files and has the proper NAS type. Problem is multiple user can login. How do i resolve that? Please help Thanks -- View this message in context: http://freeradius.1045715.n5.nabble.com/Simultaneous-Use-1-not-working-tp337... Sent from the FreeRadius - User mailing list archive at Nabble.com.