radwho - show online users
radwho [-c] [-d raddb_directory]
[-F radutmp_file] [-i] [-n] [-N
nas_ip_address] [-p] [-P nas_port] [-r]
[-R] [-s] [-S] [-u user] [-U
user] [-Z]
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.
- -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/freeradius/3.0.
- -F radutmp_file
- The file that contains the radutmp file. If this is specified, -d is not
necessary.
- -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, specify 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.
Miquel van Smoorenburg, miquels@cistron.nl.