vim /etc/sysconfig/network

NETWORKING=yes
HOSTNAME=itcast01    ###

修改配置文件方式

            vim /etc/sysconfig/network-scripts/ifcfg-eth0
            
            DEVICE="eth0"
            BOOTPROTO="static"               ###
            HWADDR="00:0C:29:3C:BF:E7"
            IPV6INIT="yes"
            NM_CONTROLLED="yes"
            ONBOOT="yes"
            TYPE="Ethernet"
            UUID="ce22eeca-ecde-4536-8cc2-ef0dc36d4a8c"
            IPADDR="192.168.8.118"           ###
            NETMASK="255.255.255.0"          ###
            GATEWAY="192.168.8.1"            ###

vim /etc/hosts
            
192.168.8.118    itcast01

#查看防火墙状态

service iptables status

#关闭防火墙

service iptables stop

#查看防火墙开机启动状态

chkconfig iptables --list

#关闭防火墙开机启动

chkconfig iptables off

reboot