Linux:网络配置

时间:2024-08-04 20:37:32

网络配置


1.网卡配置

  vim /etc/sysconfig/network-scripts/ifcfg-eth0 

  1DEVICE=eth0
2 HWADDR=00:0C:29:93:41:2B
3 TYPE=Ethernet
4 UUID=d775c95a-a13d-4859-8460-0ff336f1f406
5 ONBOOT=yes        #开机自启
6 NM_CONTROLLED=yes
7 BOOTPROTO=static     #手动获取ip地址,如果自动改为BOOTPROTO=dhcp
8 GATEWAY=192.168.0.1
9 IPADDR=192.168.0.101
10 NETMASK=255.255.255.0
11 DNS1=192.168.1.1      #可添加多个DNS备用地址

2.DNS更改的配置文件

vim /etc/reslov.conf

  1 # Generated by NetworkManager
2 nameserver 192.168.1.1

3.重启网络

service network restart
正在关闭接口 eth0: 设备状态:3 (断开连接)
[确定]
关闭环回接口: [确定]
弹出环回接口: [确定]
弹出界面 eth0: 活跃连接状态:激活中
活跃连接路径:/org/freedesktop/NetworkManager/ActiveConnection/1
状态:激活的
连接被激活
[确定

4.清除iptable

iptables -F       #清空iptable

 /etc/init.d/iptables save    #保存

iptables:将防火墙规则保存到 /etc/sysconfig/iptables:     [确定]

5.关闭selinux

vim /etc/selinux/config

  1
2 # This file controls the state of SELinux on the system.
3 # SELINUX= can take one of these three values:
4 # enforcing - SELinux security policy is enforced.
5 # permissive - SELinux prints warnings instead of enforcing.
6 # disabled - No SELinux policy is loaded.
7 SELINUX=disabled      #将selinux修改disable
8 # SELINUXTYPE= can take one of these two values:
9 # targeted - Targeted processes are protected,
10 # mls - Multi Level Security protection.
11 SELINUXTYPE=targeted

6.网络配置常用命令

1)查看网卡与网线的连接情况

     mii-tool命令  http://www.cnblogs.com/Spiro-K/p/6384793.html

2)单网卡启动

ifconfig eth0 down

ifconfig eth0 up

3)单网卡多IP配置

ifconfig eth0 : IP地址/掩码

ifconfig eth0 : IP地址/掩码

4)主机名

查看
  hostname 临时更改
  hostname name 写入配置文件
  vim /etc/sysconfig/network

5)DNS配置

DNS简易配置文件
vim /etc/hosts DNS配置文件
vim /etc/resolv.conf

6)查看路由表

route -n

Kernel IP routing table
Destination Gateway Genmask Flags      Metric Ref Use Iface
192.168.0.0 0.0.0.0 255.255.255.0 U #直连     1 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG #网关     0 0 0 eth0

7)查看开启端口

netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1444/master
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 1571/sshd
tcp 0 0 127.0.0.1:6011 0.0.0.0:* LISTEN 1960/sshd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1365/sshd
tcp 0 0 192.168.0.101:22 192.168.0.100:55989 ESTABLISHED 1960/sshd
tcp 0 0 192.168.0.101:22 192.168.0.100:52818 ESTABLISHED 1571/sshd
tcp 0 0 ::1:25 :::* LISTEN 1444/master
tcp 0 0 ::1:6010 :::* LISTEN 1571/sshd
tcp 0 0 ::1:6011 :::* LISTEN 1960/sshd
tcp 0 0 :::22 :::* LISTEN 1365/sshd