The firewall rules are only active if the
iptables service is running. To manually start the
service, use the command:
/sbin/service iptables restart |
To ensure that it is started when the system is booted, issue the
command:
/sbin/chkconfig --level 345 iptables on |
The ipchains service is not included in
Red Hat Enterprise Linux. However, if ipchains is installed (for
example, an upgrade was performed, and the system had
ipchains previously installed), the
ipchains service should not be activated along with
the iptables service. To make sure the
ipchains service is disabled and configured not to
start at boot time, execute the following two commands:
/sbin/service ipchains stop
/sbin/chkconfig --level 345 ipchains off |
The Services Configuration Tool can be used to enable or
disable the iptables and ipchains
services.