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This article mainly introduces which firewalld commands are commonly used in Centos7. It is very detailed and has a certain reference value. Friends who are interested must finish reading it!

Firewalld is a major feature of centos7, and there are two biggest benefits: it supports dynamic updates without restarting the service; the second is to add the concept of "zone" to the firewall.

Permanently open a port: firewall-cmd-- permanent-- add-port=8080/tcp

Permanently close a port: firewall-cmd-- permanent-- remove-port=8080/tcp

Permanently open a service: firewall-cmd-- permanent-- add-service=http

Permanently shut down a service: firewall-cmd-permanent-remove-service=http

Port forwarding: firewall-cmd-- permanent-- add-forward-port=port=80:proto=tcp:toport=8080:toaddr=192.0.2.55

Allow forwarding to another address: firewall-cmd-- permanent-- add-masquerade

Reload Firewall: firewall-cmd-- reload

Run, stop, disable firewalld

Launch: # systemctl start firewalld

Check status: # systemctl status firewalld or firewall-cmd-state

Stop: # systemctl disable firewalld

Disable: # systemctl stop firewalld

Configure firewalld

View version: $firewall-cmd-version

View help: $firewall-cmd-help

View the settings:

Display status: $firewall-cmd-state

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 rejection status: # firewall-cmd-panic-off

Check whether to reject: $firewall-cmd-query-panic

The above is all the contents of the article "what are the common firewalld commands in Centos7?" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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