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F12 Internet Access Networking

Department of Electrical and Computer Engineering
Associate Professor Gregory R. Kriehn
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F12 Networking

The network configuration files are located in a number of places:

Hostname & Gateway: /etc/sysconfig/network
Network Devices: /etc/sysconfig/network-scripts/ifcfg-[]
Name Servers: /etc/resolv.conf
Hosts: /etc/hosts

All of this information should have already been setup during the installation phase of F12. I have provided locations of the relevant files, should you choose to make modifications to them. I have also included personal links to each of these files, but they are password protected since they are only relevant to me and are only used to verify that the configuration for each of the files is correct (I have a tendency to forget my Name Servers). If you would rather use the GUI, to set an additional Network Connection, use the following:

~> sudo system-config-network
If you need to make a new connection, or edit an old one, click on the appropriate button, and fill in the appropriate information.  Except for my server, I tend not to allow any of the connections to come up during boot time, because I simply do not know what kind of internet connectivity is going to be available.  Instead I will use the ifup/ifdown commands to bring up an appropriate interface.  For example, to bring up the Ethernet connection, which is labeled eth0, I would type:
~> ifup eth0
To bring it back down, type:
~> ifdown eth0
That's about it.  For F12, I've decided to break off the Wireless section into a separate web page, simply because it is a topic that really needs to be addressed on its own.