centos unable remote connectivity solutions:
1. Check the firewall is turned off
service iptables status
Temporarily turn off the firewall through the following command, you can also permanently turn off the firewall
/etc/init.d/iptables stop
service iptables stop
chkconfig iptables off (permanently closed)
2, to see if the installation sshd
rpm -qa |grep sshd
View is running
If not used sshd yum install openssh-server installation
3, to solve the above problem, you can connect remotely