Stop not need System Service

When your system booted, it will call base services from general installation for working. But some services not need for your working and it is unsecurity. So, you need to stop that services for your system secure. You can use setup command at root looged in as below :

[root@test root]#setup
[root@test root]#

You will see screen as below :

In linux Redhat You can use command #ntsysv
Next step select the System Services tab and press Enter you can see your system services follow screen as below :

Ok, this step you can unselect services if you think you not need that services by up and down arrow scroll for select service and press space bar for disable ( * before service name it mean that service is working at boot time, if not have * before service it mean that service not call at boot time).

Next , you need to reboot system for refresh service up at boot time.

Services as below if you not use you need to disable it out from your system :

anacron
atd
autofs
chargen
chargen-udp
daytime
daytime-udp
echo
echo-udp
finger
gpm
identd
isdn
kdcrotate
keytable
linuxconf
netfs
nfs
nfslock
ntalk
portmap
radvd
rawdevices
rexec
rlogin
rsh
rstatd
rsync
rusersd
rwalld
rwhod
sendmail
snmpd
talk
telnet
time
time-udp
xfs
ypbind
yppasswdd
ypserv