auth substack system-auth auth include postlogin规则的意思

这是一个涉及Linux系统中PAM（Pluggable Authentication Modules）配置的问题。

auth substack system-auth是指将system-auth文件中的认证规则添加到当前文件中，system-auth文件通常包含与用户认证相关的规则。

auth include postlogin是指将postlogin文件中的认证规则包含在当前文件中，postlogin文件通常包含与用户登录后的操作相关的规则。

因此，这两行规则的意思是将system-auth和postlogin文件中的认证规则添加到当前文件中，以实现更完整和安全的认证和登录流程。

相关问题

password include system-auth什么意思

这是一个Linux系统常用的文件，用于定义用户登录时的认证规则。其中，system-auth是一个包含了多个模块的文件，而password和include则是其中的两个模块。

password模块用于验证用户的密码，并在密码正确的情况下更新用户的密码过期时间等信息。而include模块则用于引用其他模块，以方便对系统的认证规则进行修改和管理。

综合来说，password和include模块都是system-auth文件中的重要组成部分，用于保障Linux系统的安全性和稳定性。

/etc/pam.d/system-auth

/etc/pam.d/system-auth is a configuration file for the Pluggable Authentication Module (PAM) system on Linux. PAM is a flexible mechanism used by Linux systems to authenticate users and provide access control. The system-auth file defines the rules and policies for user authentication and access control, including password policies, account lockout settings, and authentication methods.

This file is used by many Linux distributions, including Red Hat, CentOS, Fedora, and others. It is often included as part of a larger configuration file, such as /etc/pam.d/login, which defines the rules for the login process.

The contents of the system-auth file can vary depending on the Linux distribution and the specific security policies in place. However, some common settings may include:

- Password policies, such as minimum length, complexity requirements, and expiration settings
- Account lockout settings, which can prevent brute-force attacks by locking out accounts after a certain number of failed login attempts
- Authentication methods, such as local password authentication, LDAP authentication, or Kerberos authentication
- Session management policies, such as setting environment variables, limiting resource usage, or logging activity

Overall, the system-auth file plays a critical role in ensuring the security and integrity of Linux systems by defining the rules for user authentication and access control.