1.查看selinux的状态
- getenforce 命令是单词get(获取)和enforce(执行)连写,可查看selinux状态,与setenforce命令相反
- setenforce 命令则是单词set(设置)和enforce(执行)连写,用于设置selinux防火墙状态,如: setenforce 0用于关闭selinux防火墙,但重启后失效
[root@localhost ~]# getenforce
Enforcing
sestatus:
查看当前系统上面SELinux的策略,运行模式等信息
[root@localhost ~]# sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: targeted
Current mode: enforcing
Mode from config file: enforcing
Policy MLS status: enabled
Policy deny_unknown status: allowed
Max kernel policy version: 28
SELinux status:selinux防火墙的状态,enabled表示启用selinux防火墙
Current mode: selinux防火墙当前的安全策略,enforcing 表示强
2.关闭SElinux
2.1 临时关闭(不用重启即可生效)
setenforce 0 :用于关闭selinux防火墙,但重启后失效
[root@localhost ~]# setenforce 0
[root@localhost ~]# sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: targeted
Current mode: permissive
Mode from config file: enforcing
Policy MLS status: enabled
Policy deny_unknown status: allowed
Max kernel policy version: 28
setenforce 0 ##设置SELinux 成为permissive模式
2.2 SElinux的三种模式
- enforcing:强制模式:代表 SELinux 运作中,且已经正确的开始限制 domain/type 了
- permissive:宽容模式:代表 SELinux 运作中,不过仅会有警告讯息并不会实际限制
- disabled:关闭:SELinux 并没有实际运作
2.3 永久关闭SELinux(需重启生效)
打开selinux配置文件
[root@localhost ~]# vim /etc/selinux/config
将SELINUX=enforcing改为SELINUX=disabled,保存后退出
# 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
重启
root@localhost ~]# reboot
验证状态
[root@localhost ~]# /usr/sbin/sestatus
SELinux status: disabled
[root@localhost ~]# getenforce
Disabled
至此 selinux关闭完成