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# The Linux-PAM System Administrators' Guide

## Andrew G. Morgan, `morgan@linux.kernel.org`

DRAFT v0.59 1998/1/7

This manual documents what a system-administrator needs to know about the Linux-PAM library. It covers the correct syntax of the PAM configuration file and discusses strategies for maintaining a secure system.

## 1. Introduction

## 2. Some comments on the text

## 3. Overview

## 4. The Linux-PAM configuration file

- 4.1 Configuration file syntax
- 4.2 Directory based configuration
- 4.3 Generic optional arguments
- 4.4 Example configuration file entries

## 5. Security issues of Linux-PAM

- 5.1 If something goes wrong
- 5.2 Avoid having a weak `other' configuration

## 6. A reference guide for available modules

- 6.1 Chroot
- 6.2 Cracklib pluggable password strength-checker
- 6.3 The locking-out module
- 6.4 Set/unset environment variables
- 6.5 The filter module
- 6.6 Anonymous access module
- 6.7 The group access module
- 6.8 The Kerberos 4 module.
- 6.9 The last login module
- 6.10 The resource limits module
- 6.11 The list-file module
- 6.12 The mail module
- 6.13 The no-login module
- 6.14 The promiscuous module
- 6.15 The Password-Database module
- 6.16 The RADIUS session module
- 6.17 The rhosts module
- 6.18 The root access module
- 6.19 The securetty module
- 6.20 Time control
- 6.21 Warning logger module
- 6.22 The wheel module

## 7. Files

## 8. See also

## 9. Notes

## 10. Author/acknowledgments

## 11. Bugs/omissions

## 12. Copyright information for this document

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