rlm_chap(5)

rlm_chap5

Freeradius module

Overview

The rlm_chap module provides CHAP functionality.

This module validates a user with CHAP authentication. If called in Authorize, it will look for CHAP-Password attribute in the Access-Request and adds an Auth-Type attribute set to CHAP if the Config-Items list unless Auth-Type has already set.

CHAP authentication requires access to the clear-text password for the user. Standard Unix system authentication or passwords encrypted via crypt() are not compatible with CHAP.

Sections

authorization, authentication

Files

/etc/raddb/radiusd.conf

Releases

12 releases since Debian 3.1 (Sarge); the text changed 3 times.

  1. 3.1–8
  2. 9–11
  3. 12–13
  4. Arch

Author

Chris Parker, [email protected]

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