CentOS Configuration Firewall Operation instance (start, stop, open, closed port)

CentOS Configuration Firewall Operation instance (start, stop, open, closed port):

Note: The basic operation of the firewall command:

Querying firewall Status:

[[Email protected] ~]# service iptables status< carriage return >

To stop the firewall:

[[Email protected] ~]# service iptables Stop < Enter >

To start the firewall:

[[Email protected] ~]# service iptables start < Enter >

To restart the firewall:

[[Email protected] ~]# service iptables Restart < Enter >

To permanently shut down the firewall:

[[email protected] ~]# chkconfig iptables off< Carriage return >

Enable after permanent shutdown:

[[email protected] ~]# chkconfig iptables on< Carriage return >

1. View firewall status

[[Email protected] ~]# service iptables status< carriage return >

2, edit the/etc/sysconfig/iptables file. We're going to open 8080 ports and 9990 ports in our instance.

Open/etc/sysconfig/iptables with editor

4. Save the/etc/sysconfig/iptables file and execute it at the terminal

[[Email protected] ~]# service iptables Restart < Enter >

5. New view of firewall status

[[Email protected] ~]# service iptables status< carriage return >

6, this time, the server's 8080 and 9990 ports can provide services to the outside.

7, other ports open mode is similar to the open mode.

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

CentOS Configuration Firewall Operation instance (start, stop, open, closed port)