Network IP address configuration Red Hat Fedora

Rebooted your server/workstation, only to notice that your network configuration is gone?
To make permanent network entries in Fedora or Red Hat and many other Linux distributions, you need to edit your ifcfg file. The ifcfg file should be located in /etc/sysconfig/network-scripts and named after your network cards interface name. Usually eth0 or eth1.

Two common ways to change and make permanent tcp/ip configurations.

1. As user root ( symbolized with # ) change your directory to /etc/sysconfig/network-scripts
2. # cd /etc/sysconfig/network-scripts

Use your text editor of choice. vi, nano, ed, emacs or perphaps pico. Oh, if you happen to run ed, type Q to get out. :-)

# vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=none
HWADDR=00:15:C5:08:3F:D5
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes
NETMASK=255.255.255.0
IPADDR=10.10.100.50
GATEWAY=10.10.100.1

This is what your ifcfg-eth0 or ifcfg-eth1 could look like after you have edit it.
NETMASK, usually 255.255.255.0 if you have want a usual /24 net.
IPADDR= Normally an 192.168.x.x or 10.10.10.x or 172.x.x.x address. Check your router/access point for details on what net it is configured to service.
GATEWAY= This should be the ip address of your router or access point.