Automating Windows Firewall with

Question

I have C# Application that uses PORT 777 for asynchronous communication and PORT 3306 for communication with My Sql Server. Problems arise when the ports is blocked by a fir

Answer 1

I came here via Google looking for a .net method of listing the Windows Firewall open ports. The answers described above did not work. Specifically the firewall.LocalPolicy.CurrentProfile.GloballyOpenPorts always had a count of zero. These answers are old and may well apply to Windows 7. What worked for me on Windows 10 was this code.

using System;
using System.Collections;
using NetFwTypeLib;

namespace FirewallPorts
{
    class FwPorts
    {
        static void Main(string[] args)
        {
            Type fwPolicy2Type = Type.GetTypeFromProgID("HNetCfg.FwPolicy2", true);
            INetFwPolicy2 fwPolicy = (INetFwPolicy2)Activator.CreateInstance(fwPolicy2Type);
            int currentProfs = fwPolicy.CurrentProfileTypes;
            NET_FW_PROFILE_TYPE2_ foo = (NET_FW_PROFILE_TYPE2_)currentProfs;
            if (foo.HasFlag(NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PRIVATE))
                Console.WriteLine("PrivateNet");
            if (!foo.HasFlag(NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PUBLIC))
                Console.WriteLine("NOT PUBLIC");
            bool fpsEnabled = fwPolicy.IsRuleGroupCurrentlyEnabled["File and Printer Sharing"];
            bool FwEnabled = fwPolicy.FirewallEnabled[NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PUBLIC] || fwPolicy.FirewallEnabled[NET_FW_PROFILE_TYPE2_.NET_FW_PROFILE2_PRIVATE];
            Console.WriteLine($"Windows Firewall enabled is {FwEnabled}");
            INetFwRules rules = fwPolicy.Rules;
            foreach (INetFwRule item in rules)
            {
                if (item.Enabled && item.Name.Contains("Sharing"))
                {
                    Console.WriteLine(item.Name);
                    Console.WriteLine($"LocalPorts: {item.LocalPorts}, {(NET_FW_PROFILE_TYPE2_)item.Profiles}");
                    Console.WriteLine(item.Description + "\r\n");
                }
            }
        }
    }
}

I did not need to open or close Ports but it can be done by changing rule status, or creating new rules and enabling them. Hope this saves someone else a few hours.