![]() ![]() 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. ![]()
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