New Linux Server Setup Configuration for ssh new port number CentOS 6

#Check Firewall already disabled

getenforce

#If Firewall not show disabled, please modify the file.

vi /etc/sysconfig/selinux

SELINUX=disabled

cat /etc/sysconfig/selinux

#Check iptables already off

chkconfig iptables --list

#If iptables not show off, please modify the file.

chkconfig iptables off

#Add the port 222

vi /etc/ssh/sshd_config

Port 222

#restart sshd

service sshd restart

#reboot server due to we change the firewall setting

reboot

#Check Firewall already disabled

getenforce

#Add user for DEV or QA

useradd John

passwd John

#Add user into sudoer for get root permission

vi /etc/sudoers

John ALL=(ALL)  ALL