How to solve the problem that CentOS port 80 cannot be accessed

How to solve the problem that port 80 cannot be accessed in CentOS

There are two ways to solve the problem that port 80 cannot be accessed: 1. Turn off the firewall in CentOS; 2. , Open port 80 of the web service.

1. Turn off the firewall

Use the service iptables stop command to temporarily turn off the firewall so that you can access port 80. (Recommended to learn laravel tutorial)

service iptables stop

iptables The firewall is usually started at boot. After using the above command to temporarily close the firewall, the firewall software will still be started the next time you boot. You can use the following command Disable starting the firewall at startup:

chkconfig iptables off

However, the purpose of the firewall is to prevent malicious external access, so it is best to keep the firewall running.

2. Open port 80 of the web service

Use the following command to temporarily open port 80:

iptables -I INPUT -p tcp --dport 80 -j ACCEPT

Restart the firewall to take effect:

service iptables restart

If you want to keep port 80 open the next time you boot up, use the following command to save the current settings:

service iptables save

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