Serviceconf - Red Hat LINUX 7.2 - OFFICIAL LINUX CUSTOMIZATION GUIDE Manual

Section 8.3:Serviceconf
file takes precedence over the hosts.deny file. Permissions to grant or deny access can be based
on individual IP address (or hostnames) or on a pattern of clients. See the Official Red Hat Linux
Reference Guide and the hosts_access man page for details.
8.2.1 xinetd
To control access to Internet services, use xinetd, which is a secure replacement for inetd. The
xinetd daemon conserves system resources, provides access control and logging, and can be used to
start special-purpose servers. xinetd can be used to provide access only to particular hosts, to deny
access to particular hosts, to provide access to a service at certain times, to limit the rate of incoming
connections and/or the load created by connections, etc.
xinetd runs constantly and listens on all of the ports for the services it manages. When a connec-
tion request arrives for one of its managed services, xinetd starts up the appropriate server for that
service.
The configuration file for xinetd is /etc/xinetd.conf, but you will notice upon inspection of
the file that it only contains a few defaults and an instruction to include the /etc/xinetd.d di-
rectory. To enable or disable a xinetd service, edit its configuration file in the /etc/xinetd.d
directory. If the disable attribute is set to yes, the service is disabled. If the disable attribute
is set to no, the service is enabled. If you edit any of the xinetd configuration files or change
its enabled status using Serviceconf, ntsysv, or chkconfig, you must restart xinetd with the
command service xinetd restart before the changes will take effect. For a list of network
services controlled by xinetd list of the contents of the /etc/xinetd.d directory with the com-
mand ls /etc/xinetd.d.

8.3 Serviceconf

Serviceconf is a graphical application developed by Red Hat to configure which SysV services in
/etc/rc.d/init.d are started at boot time (for runlevels 3, 4, and 5) and which xinetd services
are enabled. It also allows you to start, stop, and restart SysV services as well as restart xinetd.
To start Serviceconf, use one of the following commands:
• On the GNOME desktop, go to the
=> .
Serviceconf
• On the KDE desktop, go to the
Serviceconf .
• Type the command serviceconf at a shell prompt (for example, in an XTerm or a GNOME
terminal).
Main Menu Button
(on the Panel) =>
Main Menu Button
(on the Panel) =>
Programs
Red Hat
95
=>
System
=> =>
System