sed -i '/Port/ s/^#//' /etc/ssh/sshd_config sed -i '/Port/ s/^Port.*$/Port {$ssh_port}/' /etc/ssh/sshd_config firewall-cmd --zone=public --add-port={$ssh_port}/tcp --permanent && firewall-cmd --reload iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport {$ssh_port} -j ACCEPT && service iptables save