RADWHO(1)

💅 radwho — FreeRADIUS Daemon

okay so bestie, welcome to radwho(1), the little utility that lets you peek at who's online rn ✨

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🌸 NAME

radwho — show online users 🫶

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✨ SYNOPSIS

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]

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🦋 DESCRIPTION

so the FreeRADIUS server can be configured to keep an active session database in a file called radutmp — like, a whole little guest list of who's currently connected 💖 and this utility radwho shows you the content of that session database. that's it, that's the vibe. main character energy for session data, periodt.

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🎀 OPTIONS

• -c — shows caller ID (if it's available) instead of the full name. iykyk 📞
• -d raddb_directory — the directory that contains the RADIUS configuration files. defaults to /etc/raddb. 🗂️
• -F radutmp_file — the file that contains the radutmp file. if you specify this, then -d is not necessary. one or the other, bestie, you got options 💅
• -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 flag prevents this. no lookups, no extra name, we stay private 🙈
• -N nas_ip_address — show only those entries which match the given NAS IP address. filter slay 🔥
• -p — adds an extra column for the port type — I for ISDN, A for Analog. iconic little column ngl 📟
• -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. just the raw truth fr fr 📄
• -R — output all data in RADIUS attribute format. all fields are printed. every single one, we're not skipping anything 👑
• -s — show full name. 💖
• -S — hide shell users. doesn't show the entries for users that do not have a SLIP or PPP session. bye to the shell-only girlies 👋
• -u user — show only those entries which match the given username (case insensitive). lowercase girlie friendly 🍓
• -U user — show only those entries which match the given username (case sensitive). exact match energy, capital letters matter bestie ⭐
• -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 user's session from radutmp. ⚡ literal zap

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💫 the examples (they ate, no cap)

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. 🔥 boom, everyone's off the guest list

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. ok go off and experiment, you've got this 🧚

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🌈 SEE ALSO

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

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💜 AUTHOR

Miquel van Smoorenburg, miquels@cistron.nl.

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and that's the whole page bestie 🎀 — footer tea: this is from RADWHO(1), FreeRADIUS Daemon, dated 17 Feb 2013. mwah, go check who's online 💋