Selinux、Firewalld和Iptables基础设置

admin

Selinux防火墙:
1.查看
sestatus

2.关闭
vi /etc/selinux/config
SELINUX=disabled

3.重启
init 6

firewalld防火墙:
1.查看
systemctl status firewalld

2.关闭
systemctl stop firewalld

3.开机关闭
systemctl disable firewalld

iptables防火墙:
1.查看规则
iptables -L -n

2.清空规则
iptables -F

3.保存规则
service iptables save

yum软件包安装:
1.挂载光盘
mount /dev/cdrom /media

2.查看挂载
df

3.配置yum
cd /etc/yum.repos.d/
mv CentOS-Media.repo /mnt
rm -rf *
mv /mnt/CentOS-Media.repo ./

4.vi CentOS-Media.repo
[c8-media-BaseOS]
baseurl=file:///media/BaseOS
gpgcheck=0
enabled=1

[c8-media-AppStream]
baseurl=file:///media/AppStream
gpgcheck=0
enabled=1

5.查看yum可控制的软件包
yum list | wc -l
yum list | grep iptables

6.yum安装rpm软件包
yum -y install iptables-service