Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Installation Manual

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Chapter 32. Kickstart Configurator
342
Figure 32.10. Firewall Configuration
If
Disable firewall
is selected, the system allows complete access to any active services and ports.
No connections to the system are refused or denied.
Selecting
Enable firewall
configures the system to reject incoming connections that are not in
response to outbound requests, such as DNS replies or DHCP requests. If access to services running
on this machine is required, you can choose to allow specific services through the firewall.
Only devices configured in the
Network Configuration
section are listed as available
Trusted
devices
. Connections from any devices selected in the list are accepted by the system. For example,
if
eth1
only receives connections from internal system, you might want to allow connections from it.
If a service is selected in the
Trusted services
list, connections for the service are accepted and
processed by the system.
In the
Other ports
text field, list any additional ports that should be opened for remote access. Use the
following format:
port:protocol
. For example, to allow IMAP access through the firewall, specify
imap:tcp
. Numeric ports can also be specified explicitly; to allow UDP packets on port 1234 through
the firewall, enter
1234:udp
. To specify multiple ports, separate them with commas.
32.7.1. SELinux Configuration
Kickstart can set SELinux to
enforcing
,
permissive
or
disabled
mode. Finer grained
configuration is not possible at this time.
32.8. Display Configuration
If you are installing the X Window System, you can configure it during the kickstart installation by
checking the
Configure the X Window System
option on the
Display Configuration
window as