Virtual Machines Network Configuration

Here you’ll learn to set IPs to your VM.

Debian based OS

You need to config /etc/network/interfaces file.

• First, debian has not sudo command, so let install:

  su
  apt-get install sudo
  adduser username sudo
  

• Second, we add our username on the file /etc/sudoers:

  su
  nano /etc/sudoers
  

• Third, add the following line:

  usernamehere  ALL=(ALL:ALL) ALL
  

• Four, installing components (the last command, in some cases is not necessary):

  sudo apt-get update
  sudo apt-get install lsb-core htop
  sudo cp /sbin/ifconfig /usr/local/bin/
  

• Configure the network interfaces:

  sudo nano /etc/network/interfaces
  

• Add or modify:

  auto eth0
  iface eth0 inet static
  address 192.168.100.133
  netmask 255.255.255.0
  network 192.168.100.0
  gateway 192.168.100.1
  broadcast 192.168.100.255
  dns-nameservers 8.8.8.8 8.8.4.4
  

• Restart the services:

  sudo /etc/init.d/networking restart
  sudo systemctl start sshd.service
  

• Now, we connect from the OS host through ssh:

  ssh jenazad@192.168.100.133
  

Red Hat Enterprise Linux based OS

You need to config /etc/sysconfig/network-scripts/ifcfg-* files, each one per driver.

• First, installing components:

  sudo yum update
  sudo yum install redhat-lsb-core wget epel-release net-tools nano htop
  

• Configure the network interfaces:

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

• Add or modify:

  BOOTPROTO=static
  ONBOOT=yes
  IPADDR=192.168.100.129
  NETMASK=255.255.255.0
  NETWORK=192.168.100.0
  GATEWAY=192.168.100.1
  BROADCAST=192.168.100.255
  DNS1=8.8.8.8
  DNS2=8.8.4.4
  

• Restart the services:

  sudo systemctl restart network
  sudo systemctl start sshd.service
  

• Now, we connect from the OS host through ssh:

  ssh jenazad@192.168.100.129