Then you can remove the rule: sudo ufw delete 1Īre you looking to learn more about web server security? Check out our guide on how to harden your managed VPS or dedicated server.To find the rule number for UFW rules: sudo ufw status numbered.To check whether UFW is running with additional information such as logging and profile status:.To close a port in UFW using the port number:Īfter making changes to any firewall, you should verify your changes to ensure they’re correct and active.To close a port in UFW using the service name:.You can accomplish this using the service name or port number. After you open a port in UFW, ensure UFW is enabled:Īfter you uninstall software you should close any ports you no longer need open on your system.Sudo ufw allow from 1.2.3.4 to any port 22

To allow connections on a specific port from an IP address:.To allow all connections from a specific IP subnet:.If you need to allow all connections from a specific system or network IP address: sudo ufw allow from 1.2.3.4.If there is no service listed for the port, you can open the port by specifying the port and protocol (TCP/UDP):.If the service is listed, you can open the port using the service name (TCP/UDP protocol optional):.OpenVPN, PostgreSQL, IRC):Ĭat /etc/services | grep portTo navigate the full list, use Page Up, Page Down, and arrow keys after using the less command: less /etc/services Check if the application port is defined as a service (e.g.Below we cover how to open ports using the port number, service name, and custom IP/port combination. There are multiple ways to open a port in UFW.

Ufw logo