CentOS System Firewall Port configuration instance (starting, stopping, opening, closing)

  Note: Basic operation commands for firewalls:

code is as follows

copy code

query Firewall status: [root@localhost ~]# service   Status   To stop the firewall: [root@localhost ~]# service   iptables stop   Start firewall: [ Root@localhost ~]# service   iptables start   Restart firewall: [root@localhost ~]#] service   iptables Restart   to permanently shut down the firewall: [root@localhost ~]# chkconfig   off Iptables; Enable after permanent shutdown: [root@localhost ~]# chkconfig   iptables on

 
strong> The following is an example operation:

1. View firewall status

[Root@localhost ~]# service iptables status

2, edit/etc/sysconfig/iptables file. In our case, we're going to open port 8080 and port 9990.

Open/etc/sysconfig/iptables with editor

3, according to gourd painting scoop, we add 8080 ports and 9990 ports

4, save the/etc/sysconfig/iptables file, and in the terminal implementation

[root@localhost ~]# Service iptables restart

5, the new view firewall status

[Root@localhost ~]# service iptables status

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

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