checkrad(5)

checkrad5

Usage

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

Overview

Checkrad is used by the radius server to check if its idea of a user logged in on a certain port/NAS is correct if a double login is detected.

Returns: 0 = no duplicate, 1 = duplicate, >1 = error.

Options

-d

Enable printing of debugging information.

nas-type

Type of port/NAS. Can be one of:

•

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

The "other" type cause checkrad to skip any check and always returns 1.

nas-ip

IP address of the NAS to check.

nas-port

The NAS port to check (may be ignored by some nas-type).

login

The login name to check.

session-id

Session to check. (actually ignored by all nas-type)

Releases

11 releases since Debian 4.0 (Etch); the text changed 2 times.

  1. 4.0–6.0
  2. 7–8
  3. 9–Arch

Author

Written by Miquel van Smoorenburg, [email protected].

This manual page was written by Marco Nenciarini <[email protected]> for the Debian project (but may be used by others).

From freeradius 3.2.10-4 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.