[root@localhost ~]# cat /etc/redhat-release

CentOS Linux release 7.6. (Core)

[root@localhost ~]# cd /etc/sysconfig/network-scripts/

[root@localhost network-scripts]# vi ifcfg-ens160

TYPE=Ethernet

PROXY_METHOD=none

BROWSER_ONLY=no

BOOTPROTO=static

DEFROUTE=yes

IPV4_FAILURE_FATAL=no

IPV6INIT=yes

IPV6_AUTOCONF=yes

IPV6_DEFROUTE=yes

IPV6_FAILURE_FATAL=no

IPV6_ADDR_GEN_MODE=stable-privacy

NAME=ens160

UUID=c7e9416b-47bf--95a0-96038e78fe40

DEVICE=ens160

ONBOOT=yes

IPADDR=172.16.4.243

NETMASK=255.255.252.0

GATEWAY=172.16.7.254

查看防火墙状态

systemctl status firewalld.service

关闭防火墙

systemctl stop firewalld.service
打开防火墙

systemctl start firewalld.service

[root@localhost ~]# vi /etc/sysconfig/selinux

# 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 - Targeted processes are protected, # minimum - Modification of targeted policy. Only selected processes are protected. # mls - Multi Level Security protection. SELINUXTYPE=targeted