Ubuntu12.04 Network Configuration

1. Configure/etc/Network/interfaces

# Static IP address 1 auto LO 2 iface lo Inet loopback # loopback virtual network device, allow TCP/IP IP address 127.0.0.1 to access your computer 3 # the primary network interface 4 auto eth0 5 iface eth0 Inet static # configure static IP address 6 address 10.112.18.106 # IP address 7 # network 10.112.18.0 8 netmask 255.255.255.0 # subnet mask 9 # broadcast 10.112.18.255 10 gateway 10.112.18.254 # gateway 11 DNS-nameservers 10.112.18.1 # DNS Server
Auto eth1 # continue to add the second Eni, which is the same as the above
..........

# DHCP Dynamic IP address 1 auto LO 2 iface lo Inet loopback 3 # the primary network interface 4 auto eth0 5 iface eth0 Inet DHCP

2. Restart the network. The configuration takes effect.

sudo /etc/init.d/networking restart 

3. Common Network Information viewing commands

Ifconfig # lists information about each network adapter. You can find the corresponding MAC address, IP address, and subnet mask in the network adapter (usually eth0) in use.

Sudo netstat-atnp # view the current network connection status and program

3. Modify the MAC address

1 sudo ifconfig eth0 down # disable Nic 2 sudo ifconfig eth0 HW ether 00: AA: BB: CC: DD: ee # change the address 3 sudo ifconfig eth0 up # Then start Nic

Permanent modification

 sudo vim /etc/init.d/rc.local

Add the preceding three lines of commands.

4. Host Name

1 sudo/bin/hostname # view host name 2 sudo/bin/hostname newname # Set the Host Name of the current host

5. Network Manager (the network configuration tool provided by UBUNTU)

If you have not installed sudo apt-Get install network manager first

 

====================================== Solutions to some problems ================ ========================

1. Invalid DNS Configuration

1 apt-Get install resolvconf # Check whether resolvconf2 dpkg-reconfigure resolvconf is installed # reconfigure resolvconf. Select Yes in the confirmation box.

Then restart and solve the problem.

2.