For more information, refer to the following resources.
The man pages for ntsysv, chkconfig, xinetd, and xinetd.conf
man 5 hosts_access The man page for the format of host access control files (in section 5 of the man pages).
http://www.xinetd.org The xinetd webpage. It contains a more detailed list of features and sample configuration files.
Red Hat Linux Reference Guide, Red Hat, Inc. This companion manual contains detailed information about how TCP wrappers and xinetd allow or deny access, more detailed information about how to configure network access using them, and instructions for creating iptables firewall rules.