NAME

       radwho - show online users

SYNOPSIS

       radwho  [-c]  [-d  raddb_directory]  [-f] [-i] [-n] [-N nas_ip_address] [-p] [-P nas_port]
       [-r] [-R] [-s] [-S] [-u user] [-U user] [-Z]

DESCRIPTION

       The FreeRADIUS server can be configured to maintain an active session database in  a  file
       called radutmp. This utility shows the content of that session database.

OPTIONS

       -c     Shows caller ID (if available) instead of the full name.

       -d raddb_directory
              The directory that contains the RADIUS configuration files. Defaults to /etc/raddb.

       -f     Behave  as  the  'fingerd'  daemon  -  waits for one line of input, then prints the
              output with lines \r\n terminated.

       -i     Shows the session ID instead of the full name.

       -n     Normally radwho looks up the username in the systems password file, and  shows  the
              full username as well. The -n flags prevents this.

       -N nas_ip_address
              Show only those entries which match the given NAS IP address.

       -p     Adds an extra column for the port type - I for ISDN, A for Analog.

       -P nas_port
              Show only those entries which match the given NAS port.

       -r     Outputs  all  data  in  raw  format  - no headers, no formatting, fields are comma-
              separated.

       -R     Output all data in RADIUS attribute format.  All fields are printed.

       -s     Show full name.

       -S     Hide shell users. Doesn't show the entries for users that do not have a SLIP or PPP
              session.

       -u user
              Show only those entries which match the given username (case insensitive).

       -U user
              Show only those entries which match the given username (case sensitive).

       -Z     When  combined  with  -R,  prints  out the contents of an Accounting-Request packet
              which can be passed to radclient,  in  order  to  "zap"  that  users  session  from
              radutmp.

       For example,

              $ radwho -ZRN 10.0.0.1 | radclient -f - radius.example.net acct testing123

       will  result  in  all  an Accounting-Request packet being sent to the RADIUS server, which
       tells the server that the NAS rebooted.  i.e. It "zaps" all of the users on that NAS.

       To "zap" one user, specifiy NAS, username, and NAS port:

              $ radwho -ZRN 10.0.0.1 -u user -P 10 | radclient -f - radius.example.net acct testing123

       Other combinations are also possible.

SEE ALSO

       radiusd(8), radclient(1), radiusd.conf(5).

AUTHOR

       Miquel van Smoorenburg, miquels@cistron.nl.

                                           7 April 2005                                 RADWHO(1)