Linux Determine which Services are Enabled at Boot

The best protection against vulnerable software is running less software. How do I find out which services are enabled at Boot under CentOS / RHEL / Fedora Linux? How do I disable software which is not needed?
Open terminal and login as root user.

Type the following command to list all services which are enabled at boot:

#chkconfig --list | grep $(runlevel | awk '{ print $2}'):on

Task: Disable service,
To stop service, enter:

# service {service-name} stop
# service vmware stop

To disable service, enter:

# chkconfig {service-name} off
# chkconfig vmware off

A note about outdated insecure service
All of the following services must be disabled to improve server security:
1. Inetd and Xinetd (inetd xinetd) - Use direct services configured via SysV and daemons.
2. Telnet (telnet-server) - Use ssh
3. Rlogin, Rsh, and Rcp ( rsh-server ) - Use ssh and scp.
4. NIS (ypserv) : Use OpenLDAP or Fedora directory server.
5. TFTP (tftp-server) : Use SFTP or SSH.

To delete all of the service enter:

# yum erase inetd xinetd ypserv tftp-server telnet-server rsh-serve

ANL