Configuring Network Interfaces on Linux

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Configuring Network Interfaces on Linux

Configuring network interfaces is an important skill for Linux administrators, both professionally and personally. In this hands-on lab, you'll configure two network interfaces: the first using the older network-scripts method and the second with the more modern Network Manager method.

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Lab Info

Level

Intermediate

Last updated

Sep 22, 2025

Duration

30m

Challenge

Configure the eth1 Interface Using Network Scripts on Server 1
On Server 1, configure the eth1 interface using network-scripts:
1. In /etc/sysconfig/network-scripts, create a copy of ifcfg-eth0 called ifcfg-eth1.
2. Update ifcfg-eth1 to have the following specifications:
  
  Set the boot protocol to none.
  
  Set the device to eth1.
  
  Match the MAC address to the one assigned to the eth1 device.
  
  Set the IP address to 10.0.2.20.
  
  Set the netmask to 255.255.255.0.
  
  Set the broadcast address to 10.0.2.255.
3. Restart the network service.
4. Ensure the interface is up and running
Challenge

Configure the eth1 Interface Using nmcli on Server 2
On Server 2, configure the eth1 interface using nmcli:
1. Ensure that network manager is started and enabled
2. Configure the eth1 connection using nmcli with the following specifications:
  
  Set the connection name to System eth1.
  
  Set the interface name to eth1.
  
  Set the IP address to 10.0.3.20.
  
  Set the netmask to 255.255.255.0.
3. Ensure that the eth1 interface is up and running.

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