Ubuntu/centos Network Configuration

Ubuntu Network Configuration

Configure a temporary IP

Ifconfig eth0 192.168.3.136/24

Where 24 refers to the netmask 24 bits.

Vim/etc/network/interfaces Add the following:

Auto Eth0 #开机自动连接

Iface eth0 inet Static #静态IP

Address 192.168.1.112

Netmask 255.255.255.0

Gateway 192.168.1.1

If it is DHCP, add

Auto Eth0

Iface eth0 inet DHCP

DNS configuration:

Vim/etc/resolv.conf

NameServer 202.96.128.166

NameServer 202.96.134.133

NameServer 8.8.8.8

Add the IP addresses of some DNS servers (such as telecommunications) to the resolv.conf file.

Network restart:

sudo/etc/init.d/networking restart

To turn off the network card:

sudo ifconfig eth0 down

Open Network card

sudo ifconfig eth0 up

CentOS Network Configuration

In the networ-scripts directory, different NICs correspond to different configuration files.

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

Device=eth0

ipaddr=192.168.3.136

netmask=255.255.255.0

gateway=192.168.3.1

Hwaddr=00:0c:29:c1:78:f6

Onboot=yes #开机启动

Nm_controlled=yes

Bootproto=static

DNS Configuration

Vim/etc/resolv.conf

NameServer 202.96.128.166

NameServer 202.96.134.133

Service Restart:

sudo service network restart

Start

sudo service network start

Shut down

sudo service network stop

Ubuntu/centos Network Configuration