Red Hat LINUX ES 2.1 -, Installation Manual

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34 Chapter 3. Installing Red Hat Enterprise Linux ES
Finally, enter the Gateway and Primary DNS (and if applicable the Secondary DNS and Ternary
DNS
) addresses.
Figure 3-11. Network Configuration
Note
Do not use the numbers as seen in this sample configuration. These values will not work for your own
network configuration. If you are not sure what values to enter, contact your network administrator for
assistance.
Tip
Even if your computer is not part of a network, you can enter a hostname for your system. If you do
not take this opportunity to enter a name, your system will be known as
localhost
.
3.17. Firewall Configuration
Red Hat Enterprise Linux ES offers firewall protection for enhanced system security. A firewall exists
between your computer and the network, and determines which resources on your computer remote
users on the network can access. A properly configured firewall can greatly increase the security of
your system.