centos7 ssh selinux 防火墙

setenforce 0
vim /etc/sysconfig/selinux
SELINUX=enforcing 改为 SELINUX=disabled
重启服务reboot
firewall-cmd --zone=public --add-port=7788/tcp --permanent

firewall-cmd --reload
vim /etc/ssh/sshd_config
systemctl restart sshd.service