What to do if port access is denied under centos7

Problem:

After starting the external service on the centos7 listening port, the port access is denied.

Solution:

You can turn off the firewall directly in the development environment.

(Recommended tutorial:centos tutorial)

1. Turn off the firewall

systemctl stop firewalld

2. Disable the firewall from starting at boot

systemctl disable firewalld

Note: Remember not to turn off the firewall at will in the production environment.

The above is the detailed content of What to do if port access is denied under centos7. For more information, please follow other related articles on the PHP Chinese website!