Securing and Optimizing Linux: RedHat Edition -A Hands on Guide
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network` file

The /etc/sysconfig/network file is used to specify information about the desired network configuration on your server. Following is a example /etc/sysconfig/network file:

           NETWORKING=yes
           FORWARD_IPV4=yes
           HOSTNAME=deep. openna.com
           GATEWAY=0.0.0.0
           GATEWAYDEV=

The following values may be used:

NETWORKING=answer, where answer is yes or no -Configure networking or not to configure networking.
FORWARD_IPV4=answer, where answer is yes or no -Perform IP forwarding or not to perform IP forwarding.
HOSTNAME=hostname, where hostname is the hostname of your server.
GATEWAY=gwip, where gwip is the IP address of the remote network gateway -if available.
GATEWAYDEV=gwdev, where gwdev is the device name eth# you use to access the remote gateway.

: For compatibility with older software, the /etc/HOSTNAME file should contain the same value as HOSTNAME= hostname above. With the new version of Red Hat Linux 6.2 the FORWARD_IPV4= parameter is now specified in the /etc/sysctl.conf file instead of the /etc/sysconfig/network file.

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The `/etc/host.conf` file	Up	The `/etc/sysctl.conf` file

9.5. The /etc/sysconfig/network file

9.5. The `/etc/sysconfig/network` file