CHECKRAD(5)

📦 version 3.2.10, in alpine 3.22, alpine 3.23, alpine 3.24, arch rolling, centos-stream 10, centos-stream 9, debian bookworm, debian trixie, fedora 43, fedora 44, nixos 26.05, nixpkgs unstable, opensuse-leap 16.0, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 CHECKRAD(5) — the file formats manual page, bestie edition 💖

okay so like. this is the manual page for checkrad, from the File Formats Manual section (section 5, if you're keeping score). buckle up 🎀

✨ NAME ✨

checkrad — literally just: See if a user is (still) logged in on a certain port. that's it. that's the whole vibe check. 🕵️♀️

🌸 SYNOPSIS 🌸

checkrad [-d] nas-type nas-ip nas-port login session-id

🦋 DESCRIPTION 🦋

so Checkrad is the little bestie that the radius server calls when it suspects a double login 👀 — it goes and checks whether the server's idea of a user being logged in on a certain port/NAS is actually correct.

and it reports back with a number, which is honestly giving exit-code energy:

  • 0 = no duplicate 🙅♀️
  • 1 = duplicate 😱
  • >1 = error 💀

💅 OPTIONS 💅

  • -d — turns on printing of debugging information. it's giving "let me see everything" 🔍
  • nas-type — the type of port/NAS you're dealing with. can be any one of these, and yes bestie, I'm listing every single one because we do not skip:
    • ascend
    • bay
    • cisco
    • cisco_l2tp
    • computone
    • cvx
    • digitro
    • dot1x
    • livingston
    • max40xx
    • mikrotik
    • mikrotik_snmp
    • multitech
    • netserver
    • other
    • pathras
    • patton
    • portslave
    • pr3000
    • pr4000
    • redback
    • tc
    • usrhiper
    • versanet
⚠️ and here's the plot twist: the "other" type makes checkrad skip any check and always return 1. no cap. it just says "yeah sure, duplicate" and leaves. iconic behaviour honestly but be careful with it 🙈
  • nas-ip — the IP address of the NAS you want to check. give it the address, it goes and looks 👑
  • nas-port — the NAS port to check. heads up though: this may be ignored by some nas-type 🫠
  • login — the login name to check. yes, the actual username bestie 🌈
  • session-id — the session to check. and ngl this one is actually ignored by all nas-type 💀 so it's just... there. sitting pretty. being decorative. we love a placeholder that serves cunt and nothing else 💅

🔥 SEE ALSO 🔥

  • radiusd(8) — go read that one too, it's the whole reason this little helper exists 💜

🌟 AUTHOR 🌟

Written by Miquel van Smoorenburg, miquels@cistron.nl. legend behaviour honestly 🫶

This manual page was written by Marco Nenciarini <mnencia@debian.org> for the Debian project (but may be used by others). 💖

okay that's the whole page, you ate that, no notes ✨💅

and a cute lil sign-off: this was pulled from the File Formats Manual, dated 13 January 2006 — yes bestie, 2006, we're reading vintage and it's still serving 🎀🦋 periodt 💜

📦 where this page comes from