Block port SSH on centos7 with IPTables

how to block a port on centos 7 with IPTABLES. ----------------- in this video i will block SSH port 22 with IPTABLES. steps : 1 install iptables with : sudo yum install iptables-services 2 block port : sudo iptables -I INPUT -p tcp --dport 22 -j REJECT 3 save iptables : sudo service iptables save 4 try to connect to centos7 with ssh. sudo ssh root192.168.56.105 and you will see a message : ssh: connect to host 192.168.56.105 port 22: Connection Refused. yeah port 22 is blocked! bingo! -------------- to unblock port type : sudo iptables -D INPUT 1 sudo service iptables save,

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