Configure Firewall operation instances (enable, stop, enable, and disable ports) in CentOS)

Configure Firewall operation instances (enable, stop, enable, and disable ports) in CentOS)

CentOS configures firewall operation instances (enable, stop, enable, and disable ports ):

Note: basic firewall operation commands:

Query the Firewall Status:

[Root @ localhost ~] # Service iptables status <press enter>

Stop Firewall:

[Root @ localhost ~] # Service iptables stop <press enter>

Start Firewall:

[Root @ localhost ~] # Service iptables start <press enter>

Restart Firewall:

[Root @ localhost ~] # Service iptables restart <press enter>

Permanently disable the Firewall:

[Root @ localhost ~] # Chkconfig iptables off <press enter>

Enable after permanent shutdown:

[Root @ localhost ~] # Chkconfig iptables on <press enter>

1. view the Firewall Status

[Root @ localhost ~] # Service iptables status <press enter>

2. Edit the/etc/sysconfig/iptables file. Port 8080 and port 9990 must be enabled in our instance.

Open/etc/sysconfig/iptables in the editor

3. Add port 8080 and port 9990 as needed

4. Save the/etc/sysconfig/iptables file and run the command on the terminal.

[Root @ localhost ~] # Service iptables restart <press enter>

5. view the firewall status again

[Root @ localhost ~] # Service iptables status <press enter>

6. At this time, ports 8080 and 9990 of the server can provide external services.

7. The open mode of other ports is similar to the open mode.