Shulou(Shulou.com)06/02 Report--

1. Basic use of firewalld

Start:

Systemctl start firewalld

View status:

Systemctl status firewalld

Stop:

Systemctl disable firewalld

Disable:

Systemctl stop firewalld

2.systemctl is the main tool in CentOS7's service management tools, which combines the functions of service and chkconfig.

Start the firewall:

Systemctl start firewalld.service

Turn off the firewall:

Systemctl stop firewalld.service

Restart the firewall:

Systemctl restart firewalld.service

Displays the status of the firewall:

Systemctl status firewalld.service

Firewall at boot time:

Systemctl enable firewalld.service

Disable the firewall at power on:

Systemctl disable firewalld.service

Check to see if the firewall is powered on:

Systemctl is-enabled firewalld.service

View a list of services that have been started:

Systemctl list-unit-files | grep enabled

View the list of services that failed to start:

Systemctl-failed

3. Configure firewalld-cmd

View the version:

Firewall-cmd-version

View help:

Firewall-cmd-help

Display status:

Firewall-cmd-state

View all open ports:

Firewall-cmd-zone=public-list-ports

Update firewall rules:

Firewall-cmd-reload

View area information:

Firewall-cmd-get-active-zones

View the area to which the specified interface belongs:

Firewall-cmd-get-zone-of-interface=eth0

Reject all packages:

Firewall-cmd-panic-on

Cancel the rejection status:

Firewall-cmd-panic-off

Check to see if you reject:

Firewall-cmd-query-panic

4: open the port

Add

Firewall-cmd-- zone=public-- add-port=80/tcp-- permanent (--permanent is in effect permanently, without this parameter to expire after restart) # Open port 80

Reload

Firewall-cmd-reload

View

Firewall-cmd-- zone=public-- query-port=80/tcp # check whether port 80 is open

Delete

Firewall-cmd-- zone= public-- remove-port=80/tcp-- permanent # Delete port 80 configuration

The above is the whole content of this article, I hope it will be helpful to your study, and I also hope that you will support it.

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