The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM

Figure 11-1 Apache test page
If you get an error in starting Apache, look in the log file /var/log/httpd/error-log for clues.
If Apache started successfully but you can’t reach the test page from a browser, try accessing
it using the IP address rather than the DNS name.
11.1.3 Turning on a firewall
RHEL 6 comes with an IP tables firewall. In section 8.2.3, “Turning off unneeded services” on
page 140, it was recommended that you turn off the iptables service. If you did this on the
golden image, the firewall is turned off on this clone. This section describes how to quickly
enable an IP tables firewall and configure it to allow Web traffic through. Perform the following
steps:
► Verify that the firewall is off with the chkconfig --list command. The service name is
iptables:
# chkconfig --list iptables
iptables 0:off 1:off 2:off 3:off 4:off 5:off 6:off
► Turn on the firewall at boot time with the chkconfig command, and for this session with
the service command:
# chkconfig iptables on
# service iptables start
Applying iptables firewall rules: [ OK ]
Loading additional iptables modules: ip_conntrack_netbios_ns [ OK ]
► Go back to your browser and click refresh. You should get an error that the server is not
responding (or Unable to connect). This is because packets for ports for http: and https:
(80 and 443) are dropped by default.
Chapter 11. Cloning open source virtual servers 171