Linux环境设置IP及关闭防火墙

确认当前网络配置：

[root@localhost ~]# nmcli -p dev
=====================
  Status of devices
=====================
DEVICE      TYPE      STATE      CONNECTION
------------------------------------------------------------------
virbr0      bridge    connected  virbr0
eth0       ethernet  connected  eth0
lo          loopback  unmanaged  -- 

设置IP的文件修改如下：

## Configure eth0
#
# vi /etc/sysconfig/network-scripts/ifcfg-eth0

HWADDR=00:0C:29:10:A0:DB
MACADDR=00:0C:29:10:A0:DB
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
# Static IP Address #
BOOTPROTO=static
IPADDR=192.168.1.249
PREFIX=24
# Default Gateway IP #
GATEWAY=192.168.1.1
# DNS Servers #
DNS1=118.118.118.1
DEFROUTE=yes
PEERDNS=no
# Disable ipv6 #
IPV4_FAILURE_FATAL=no
IPV6INIT=no
NAME=eth0
UUID=2734ae8a-4190-4cb9-9b32-4404dfc83e29
# Activate on Boot #
ONBOOT=yes

## Configure Default Gateway
#
# vi /etc/sysconfig/network

NETWORKING=yes
HOSTNAME=centos6
GATEWAY=192.168.1.1

## Restart Network Interface
#

/etc/init.d/network restart

## Configure DNS Server
#
# vi /etc/resolv.conf

nameserver 118.118.118.1      # Replace with your nameserver ip
nameserver 192.168.1.1        # Replace with your nameserver ip

打开控制台，通过命令修改如下：

sudo ifconfig eth0 192.168.1.251 netmask 255.255.255.0
sudo route add default gw 192.168.1.1
sudo echo "nameserver 118.118.118.1" > /etc/resolv.conf
sudo echo "nameserver 192.168.1.1" > /etc/resolv.conf

关闭防火墙及重启网络链接：

systemctl stop firewalld
systemctl disable firewalld
/etc/init.d/network restart

通过ifconfig命令查看当前IP，如未反映上时，可通过设置画面重启网络链接：