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17.4. xinetd Configuration Files
The configuration files for
xinetd are as follows:
/etc/xinetd.conf— The globalxinetdconfiguration file./etc/xinetd.d/— The directory containing all service-specific files.
17.4.1. The /etc/xinetd.conf File
The
/etc/xinetd.conf file contains general configuration settings which effect every service under xinetd's control. It is read once when the xinetd service is started, so for configuration changes to take effect, the administrator must restart the xinetd service. Below is a sample /etc/xinetd.conf file:
defaults
{
instances = 60
log_type = SYSLOG authpriv
log_on_success = HOST PID
log_on_failure = HOST
cps = 25 30
}
includedir /etc/xinetd.d
These lines control the following aspects of
xinetd:
instances— Sets the maximum number of requestsxinetdcan handle at once.log_type— Configuresxinetdto use theauthprivlog facility, which writes log entries to the/var/log/securefile. Adding a directive such asFILE /var/log/xinetdlogwould create a custom log file calledxinetdlogin the/var/log/directory.log_on_success— Configuresxinetdto log if the connection is successful. By default, the remote host's IP address and the process ID of server processing the request are recorded.log_on_failure— Configuresxinetdto log if there is a connection failure or if the connection is not allowed.cps— Configuresxinetdto allow no more than 25 connections per second to any given service. If this limit is reached, the service is retired for 30 seconds.includedir/etc/xinetd.d/— Includes options declared in the service-specific configuration files located in the/etc/xinetd.d/directory. Refer to Section 17.4.2, “The/etc/xinetd.d/Directory” for more information.
Note
Often, both the
log_on_success and log_on_failure settings in /etc/xinetd.conf are further modified in the service-specific log files. For this reason, more information may appear in a given service's log than the /etc/xinetd.conf file may indicate. Refer to Section 17.4.3.1, “Logging Options” for additional information.
