How To Open My Server Ports

By default, none of the ports are blocked. To see a port as open, two main conditions must be met.

First, you need to allow the port via a firewall on the server. Second, you must launch a service that would listen to the specific port.

If communication is not possible over a specific port, please check the firewall rules of your server.

You might need to open a port in your firewall settings first.

  • In you run a Windows server – check your Windows Firewall
  • In you run a Linux server – check your iptables, firewalld or csf firewall, depending on the firewall you use

To find the process or service listening on a particular port in Linux, you can use the netstat command with grep command (i.e., port 80):

netstat -tulpn | grep 80

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