09.关闭或开启SeLinux+SeLinux三种状态
关闭或开启SeLinux及SeLinux的三种状态
临时关闭selinux
查看selinux
[root@localhost ~]# getenforce
Enforcing
关闭selinux
[root@localhost ~]# setenforce 0
查看selinux
[root@localhost ~]# getenforce
Permissive
永久关闭selinux
[root@bogon ~]# vim /etc/selinux/config
# 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=enforcing
# SELINUXTYPE= can take one of three two values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
将SELINUX=enforcing修改为SELINUX=disabled
然后重启reboot服务器即可生效。
开启SELINUX
永久开启selinux
[root@bogon ~]# vim /etc/selinux/config
# 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=enforcing
# SELINUXTYPE= can take one of three two values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
将SELINUX=disabled修改为SELINUX=enforcing或permissive
然后重启reboot服务器即可生效。
selinux的三种模式
Disable工作模式(关闭模式)
在 Disable 模式中,SELinux 被关闭,默认的 DAC 访问控制方式被使用。对于那些不需要增强安全性的环境来说,该模式是非常有用的。
Permissive工作模式(宽容模式)
在 Permissive 模式中,SELinux 被启用,但安全策略规则并没有被强制执行。当安全策略规则应该拒绝访问时,访问仍然被允许。然而,此时会向日志文件发送一条消息,表示该访问应该被拒绝。
Enforcing工作模式(强制模式)
从此模式的名称就可以看出,在 Enforcing 模式中, SELinux 被启动,并强制执行所有的安全策略规则。

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