Linux下怎么查看SELinux状态和关闭SELinux

SELinux简介

SELinux(Security-Enhanced Linux)是一种基于强制访问控制(MAC)的Linux内核安全模块,它提供了一种更加灵活和强大的安全策略,通过限制进程和文件的权限来保护系统免受攻击,SELinux最初是由美国国家安全局(NSA)开发的,后来成为Linux发行版的标准安全模块之一。

查看SELinux状态

在Linux系统中,可以通过以下命令查看SELinux的状态:

Linux下怎么查看SELinux状态和关闭SELinux

1、使用getenforce命令查看SELinux的当前模式:

getenforce

输出结果可能为以下几种情况:

Enforcing:表示SELinux处于强制模式,不允许不符合安全策略的操作。

Permissive:表示SELinux处于宽容模式,只记录违反安全策略的操作,但不阻止它们执行。

Disabled:表示SELinux已被禁用。

2、使用sestatus命令查看SELinux的详细信息:

sestatus

输出结果包含以下信息:

Linux下怎么查看SELinux状态和关闭SELinux

SELinux state:SELinux的状态,如Enabled(已启用)、Disabled(已禁用)等。

SELinux type:SELinux的安全上下文类型,如targeted(目标模式)、minimum(最小模式)等。

SELinux domain path:SELinux的安全域路径,用于区分不同的安全区域。

SELinux root directory:SELinux的根目录,存储安全策略相关的配置文件。

SELinux version:SELinux的版本号。

关闭SELinux

要关闭SELinux,可以按照以下步骤操作:

1、备份当前的SELinux配置文件,以便在需要时恢复:

Linux下怎么查看SELinux状态和关闭SELinux

sudo cp /etc/selinux/config /etc/selinux/config.bak

2、使用文本编辑器打开SELinux配置文件,将SELINUX=enforcingSELINUX=permissive这一行注释掉或删除,然后保存文件:

sudo vi /etc/selinux/config

在文件中找到以下内容并进行修改:

SELINUX=enforcing改为SELINUX=enforcing,或者直接删除该行。

SELINUX=permissive改为SELINUX=permissive,或者直接删除该行。

在文件末尾添加以下内容,将<your_selinux_domain>替换为实际的安全域名称:

This file controls the state of SELinux on the system.
SELINUX= can take one of these three values:
    enforcing SELinux security policy is enforced.
    permissive SELinux prints warnings instead of enforcing.
    disabled No SELinux policy is loaded.
SELINUX=disabled
SELINUXTYPE= can take one of three values: targeted, minimum, generalized.
    targeted Targeted processes are protected, while non-targeted processes are not.
    minimum Modification of targeted policy. Only selected processes are protected.  Ignored if SELINUXTYPE=targeted.
    generalized Generalized process labeling. All processes are labeled with the same level of priority. Ignored if SELINUXTYPE=targeted or minimum.
SELINUXTYPE=targeted
SELINUXDOMAIN= can only be set if SELINUXTYPE=targeted. Specifies the SELinux domain to use. For targetted policy type, value can be local or global. If local, must match LC_ALL set locally. If global, must match LC_ALL in lxc container. To use a global domain, run "selinit --localstatedir=/usr/share/selinux/state --loadpolicyglobal" first. If this variable is set to "targeted", the IDs specified for ALL targets will be used (e.g. httpd_t). If this variable is set to "min", the IDs for all targeted processes (IDs of httpd processes) will be used (e.g. httpd_t). If this variable is set to "gen", no specific IDs will be used and all processes will be labeled with the generic category (e.g. httpd_t). To see more information check help semanage-tm. If the LC_ALL variable is not set to LANG=C or LANG=POSIX, then this may also be set to the value of LC_ALL (e.g. en_US.UTF-8). To use a local domain, run "selinit --localstatedir=/usr/share/selinux/state --loadpolicylocal" first. Note that the default value for this variable is "targeted". Once changed, this cannot be changed back to its previous value. Refer to help semanage-tm for details. If you do not specify an SELinux domain, the targetted policy mode will be enabled for your system. In that case, you must specify the target package names for which you want to enable targetted policy mode using 'target' option in 'selpolicytarget' command (e.g. 'selpolicytarget httpd_t'). See help semanage-tm for details on target package management options. You can also view current target packages by running "semanage target -l" command. To disable enforcement of targeted policy mode for your system, you need to remove the target package name from the above mentioned command output using 'grep' command (e.g. "selpolicytarget | grep -v httpd"). Then you can reenable it later using 'selpolicytarget' command as shown below: 'selpolicytarget -a httpd_t' (e.g. 'selpolicytarget -a httpd_t'). Note that once you have targeted policy mode enabled for your system, you cannot switch back to general mode without removing the target packages from your system first (e.g. by running 'semanage target -d' command). To learn more about SELinux configuration options and their effects on system behavior, refer to help selinuxconfig(8). To view the current status of SELinux on your system, run "sestatus" command as described above in section A.3 of this answer. To view the version of SELinux on your system, run "seversion" command as described above in section A.4 of this answer. To troubleshoot problems associated with SELinux policy enforcement on your system, refer to help semanage-tm and man8 selinuxadm(8). For more advanced users who wish to customize their system behavior according to their needs, please consult the manual pages of various commands related to SELinux such as semanage-tm(8), semodule(5), seconfdefs(5), etc. For example, you can use these commands to define custom security policies or modules that extend the functionality of SELinux beyond its default settings. Please note that modifying the configuration files mentioned above may cause unexpected behavior or other issues on your system, so make sure to back up your configuration files before making any changes and test them thoroughly after making any changes. If you encounter any problems or have questions regarding SELinux configuration or usage, please refer to the documentation provided by the Linux distribution vendor or contact their support team for assistance.

原创文章,作者:K-seo,如若转载,请注明出处:https://www.kdun.cn/ask/141094.html

Like (0)
Donate 微信扫一扫 微信扫一扫
K-seo的头像K-seoSEO优化员
Previous 2023-12-18 11:42
Next 2023-12-18 11:45

相关推荐

  • 如何确保Linux系统的安全性?

    安全Linux一、概述在当今数字化时代,网络安全问题日益凸显,Linux操作系统,作为广泛应用的开源系统之一,其安全性对于保护关键信息基础设施至关重要,本文将深入探讨Linux系统的安全机制,从用户和权限管理、文件系统权限、SELinux、防火墙设置、加密与安全传输、漏洞管理和系统更新等方面进行全面解析,为Li……

    2024-11-20
    05
  • mapreduce读取hbase的表

    在大数据处理中,HBase是一个分布式的、面向列的开源数据库,它能够存储海量的数据并提供高效的随机访问,MapReduce是Google提出的一种用于大规模数据处理的编程模型,它将大规模数据集分解为多个小任务,然后通过并行计算将这些小任务的结果合并起来得到最终结果。在本篇文章中,我们将介绍如何使用通用MapReduce程序复制HBas……

    2024-03-12
    0152
  • apache启动但是访问不到怎么解决

    Apache启动但是访问不到怎么解决Apache是Linux系统中最常用的Web服务器软件,有时候在安装或配置完成后,会发现Apache已经启动,但是无法访问,这种情况可能是由于配置问题、防火墙设置或者网络问题导致的,本文将详细介绍如何解决这个问题。1、检查Apache是否启动我们需要确认Apache是否已经启动,在Linux系统中,……

    2024-01-27
    0326
  • 配置tftp服务器的方法是什么

    配置tftp服务器的方法是什么TFTP(Trivial File Transfer Protocol,简单文件传输协议)是一种用于在计算机之间进行简单文件传输的协议,它通常用于在无盘工作站和网络中的其他设备之间传输小文件,如启动文件、配置文件等,本文将介绍如何在Linux系统中配置一个TFTP服务器。安装TFTP服务器软件在大多数Li……

    2023-12-31
    090
  • vue 路由传参方式

    Vue路由传参是在Vue.js框架中,通过Vue Router进行页面之间的跳转时,传递参数的一种技术,在Vue.js开发中,路由传参是非常常见的需求,可以实现多个组件之间的数据共享,Vue路由传参主要有以下几种方式:1、query传参query传参是最简单的一种传参方式,它通过URL的查询字符串(query string)来传递参数……

    2024-02-02
    0103
  • 如何处理Linux安装云锁提示Detected SElinux opening,close and then install

    在安装云锁时,如果出现"Detected SElinux opening,close and then install"提示,可以尝试关闭SELinux或者临时禁用SELinux。

    2024-05-31
    099

发表回复

您的邮箱地址不会被公开。 必填项已用 * 标注

免备案 高防CDN 无视CC/DDOS攻击 限时秒杀,10元即可体验  (专业解决各类攻击)>>点击进入