Basic operation command of firewall:
Query firewall status:
[root@localhost ~]# service iptables status
Stop firewall:
[root@localhost ~]# service iptables stop
start the firewall:
[root@localhost ~]# service iptables start
restart the firewall:
[root@localhost ~]# service iptables restart
permanently close the firewall:
[root@localhost ~]# chkconfig iptables off
enable after permanent shutdown:
[root @localhost ~]# chkconfig iptables on
1. View the firewall status
[root@localhost ~]# service iptables status
2. Edit the /etc/sysconfig/iptables file. In our example, we need to open port 8080 and port 9990. Open /etc/sysconfig/iptables
with an editor.
3. According to the gourd drawing, we add port 8080 and port 9990
4. Save the /etc/sysconfig/iptables file, and execute
[root@localhost ~]# service iptables restart in the terminal
5. Check the firewall status again
[root@localhost ~]# service iptables status
6. At this time, the server's 8080 and 9990 port can provide external services.
7. The open mode of other ports is similar to this open mode.