Red Hat ENTERPRISE LINUX 3 - FOR IBM S-390 AND IBM ESERVER ZSERIES, Руководство по установке

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Finally, if you entered the IP and Netmask information manually, you may also enter the
Gateway address and the Primary, Secondary, and Tertiary DNS addresses.
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
.
Tip
To change your network configuration after you have completed the installation,
use the Network Administration Tool.
Type the
system-config-network
command in a shell prompt to launch the
Network Administration Tool. If you are not root, it prompts you for the root
password to continue.
11. Firewall Configuration
Red Hat Enterprise Linux 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.
Chapter 2. Installing Red Hat Enterprise Linux
32