Create firewall rule to open port per application programmatically in c#

Question

I need to open specific port for my application.

I have tried using INetFwAuthorizedApplication rule per application for all ports.

fwMgr.Lo         


        

Answer 1

You could also just use PowerShell.

using System.Management.Automation;
...
private void OpenPort(int port)
{
    var powershell = PowerShell.Create();
    var psCommand = $"New-NetFirewallRule -DisplayName \"\" -Direction Inbound -LocalPort {port} -Protocol TCP -Action Allow";
    powershell.Commands.AddScript(psCommand);
    powershell.Invoke();
}