centos cannot access port 80

The solution steps are as follows:

Key point: CentOS cannot access port 80 without opening the firewall! ! ! There’s nothing you can do if you open it! ! You need to add the port! !

Check the firewall status

firewall-cmd --state

Open the firewall

systemctl start firewalld

Recommended tutorial: centos usage tutorial

View the current firewall open Port

firewall-cmd --list-ports

Add port 80

firewall-cmd --zone=public --add-port=80/tcp --permanent

Restart the firewall

firewall-cmd --reload

Recommended related video tutorials: linux video tutorial

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