XINETD is a super Guardian process
XINETD is extended Internet daemon,xinetd is a new generation of Network Daemon service program, also known as Super Internet server. Often used to manage multiple
Type of lightweight Internet service. XINETD provides functionality similar to Inetd+tcp_wrapper, but is more powerful and secure.
Master configuration file/etc/xinetd.conf
Defaults//The default configuration is also the global configuration{# The next items is intended to is a quick access place to# temporarily enable or disable services.## Enab LED=//yes means enable# disabled =//no means enable# Define General logging characteristics. Log_type= SYSLOG DaemonInfo //log Type default syslog, level infoLog_on_failure = HOST//Login failed record host namelog_on_success = PID HOST DURATION EXIT//Login Success Log process pid, host, duration, exit information# Define Access restriction defaults## no_access=//Forbidden Host, network# Only_from =//only host networks allowed to access# max_load =0 //with a floating-point number as the load factor, when the load is reached within 1 minutes, the service//will cease processing subsequentCPS = - Ten //more than 50 link requests per second, waiting 10 secondsinstances = - //Maximum number of connections allowed for the same servicePer_source =Ten //maximum number of allowed connections for the same client# Address and Networking defaults//Network Settings# # Bind=//the host IP of the binding, if the machine has multiple IPs, you can select a# MDNs = yes//support for multicast DNSV6only = No//whether to support IPV6# Setup Environmental attributes//Setting Environment Variables# # Passenv=//a table of environment variables in the XINETD environment that is passed to the service when it is activated. groups= yes//Set group nameUmask =002 //Set file permission mask# Generally, banners is not used. This sets up their global defaults## banner=//the information that is displayed when the connection is established, where the file path is filled# Banner_fail =//establish the connection failure display information, here fill in the file path# banner_success =//to establish a successful connection display, fill in the file path}includedir/etc/xinetd.d//contains the configuration under the/etc/xinetd.d path
The xinetd daemon reads the configuration information in the/etc/xinetd.d/, and the other unspecified parameters are set by the default configuration in/etc/xinetd.conf.
Transient process configuration file/etc/xinetd.d/*
Telnet configuration file/etc/xinetd.d/telnet
Service telnet{Disable= No//enabledFlags = Reuse//reuse is enabled by defaultSocket_type = Stream//TCP wait= yes//allow multiple processes to respond to requestsuser = root//users running the serviceServer =/usr/sbin/inch. telnetd//binary file path for the serviceOnly_from =192.168.136.0/ - //only which IP or network access is allowedNo_access =//which users are not allowed access,Access_time = ,:xx- +:xx //what time periods are allowed to access the serviceBind =192.168.136.135 //Binding IPPer_source =Ten //Maximum allowable requests per IPCPS =Ten - //Maximum allowed access per second, more than 30 seconds to waitBanner =/etc/telnet.banner//information displayed when logging inLog_type = File/var/log/telnet.log//custom log file pathLog_on_failure + = USERID//If the login fails, then the ID of the user is logged}
XINETD configuration file