Changing SSH Port (CentOS)

SSHD Configuration

1. vi /etc/ssh/sshd_config
2. Port {port_number}
3. service sshd restart

Firewall Configuration

1. vi /etc/sysconfig/iptables
2. -A INPUT -m state --state NEW -m tcp -p tcp --dport {port} -j ACCEPT
3. service iptables restart

* After changing the SSH port, ensure that the firewall is configured to allow traffic on that port.