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

CentOS 7.0 uses firewall as the firewall by default.

Common firewall commands

Click (here) to collapse or open

Systemctl stop firewalld.service # stop firewall

Systemctl disable firewalld.service # prevents firewall from booting

Firewall-cmd-- state # View the default firewall status (show notrunning when turned off and running when turned on)

Operation example to view firewall status

Click (here) to collapse or open

[hoegh@localhost Desktop] $firewall-cmd-- state

Running

Turn off the firewall

Click (here) to collapse or open

[hoegh@localhost Desktop] $systemctl stop firewalld.service

PolicyKit daemon disconnected from the bus.

We are no longer a registered authentication agent.

PolicyKit daemon reconnected to bus.

Attempting to re-register as an authentication agent.

We are now a registered authentication agent.

[hoegh@localhost Desktop] $

[hoegh@localhost Desktop] $firewall-cmd-- state

Not running

[hoegh@localhost Desktop] $

Disable automatic start

Click (here) to collapse or open

[hoegh@localhost Desktop] $

[hoegh@localhost Desktop] $systemctl disable firewalld.service

Removed symlink / etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

Removed symlink / etc/systemd/system/basic.target.wants/firewalld.service.

[hoegh@localhost Desktop] $

~ the end~

Hoegh

2017.11.3

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