Method 1 = Network Configuration Using a Text User Interface (nmtui)
# yum install NetworkManager-tui and then just type: #nmtui (for semi graphic interface) Method 2 = edit the configuration file : RHEL / Red hat / Fedora / CentOS Linux eth0 config file. #nano /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE="eth0" BOOTPROTO="static" ONBOOT="yes" IPV6INIT="yes" IPV6_AUTOCONF="yes" GATEWAY=192.168.1.1 # Your primary public IP address # The netmask is taken from the PREFIX (where 24 is a public IP, 17 is a private IP) IPADDR0=192.168.1.5 PREFIX0="24" # To add a second public IP address: IPADDR1=172.16.1.10 PREFIX1="24" DOMAIN=example.com DNS1=8.8.8.8 DNS2=8.8.4.4 Good Luck :)