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

http://www.codeproject.com/Articles/14906/Open-Windows-Firewall-During-Installation

1. Before using the program below, please add reference FirewallAPI.dll to Visual Studio 2010. Do the following: Right-click the Project from the Solution Explorer of Visual Studio 2010 - Select the Add Reference - Select C:\Windows\System32\FirewallAPI.dll - Ok

2. Calling program firewall with 3 line code below. You can put this code in the form load of your program:

     private clsFirewall objFirewall = new clsFirewall();
     objFirewall.CloseFirewall();
     objFirewall.OpenFirewall();
   

/* Automating Windows Firewall with C# Support Windows 7 */

using System; 
using System.Collections; 
using System.Collections.Generic; 
using System.Data; 
using System.Diagnostics; 
using System.Threading; 
using NetFwTypeLib; 
using System.Windows.Forms;


namespace MyFirewall {

  public class clsFirewall {

    private int[] portsSocket = { 777, 3306 };
    private string[] portsName = { "AsyncPort", "MySqlPort" };
    private INetFwProfile fwProfile = null;

    protected internal void OpenFirewall() {
        INetFwAuthorizedApplications authApps = null;
        INetFwAuthorizedApplication authApp = null;
        INetFwOpenPorts openPorts = null;
        INetFwOpenPort openPort = null;
        try {
            if (isAppFound(Application.ProductName + " Server") == false) {
                SetProfile();
                authApps = fwProfile.AuthorizedApplications;
                authApp = GetInstance("INetAuthApp") as INetFwAuthorizedApplication;
                authApp.Name = Application.ProductName + " Server";
                authApp.ProcessImageFileName = Application.ExecutablePath;
                authApps.Add(authApp);
            }

            if (isPortFound(portsSocket[0]) == false) {
                SetProfile();
                openPorts = fwProfile.GloballyOpenPorts;
                openPort = GetInstance("INetOpenPort") as INetFwOpenPort;
                openPort.Port = portsSocket[0];
                openPort.Protocol = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP;
                openPort.Name = portsName[0];
                openPorts.Add(openPort);
            }

            if (isPortFound(portsSocket[1]) == false) {
                SetProfile();
                openPorts = fwProfile.GloballyOpenPorts;
                openPort = GetInstance("INetOpenPort") as INetFwOpenPort;
                openPort.Port = portsSocket[1];
                openPort.Protocol = NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP;
                openPort.Name = portsName[1];
                openPorts.Add(openPort);
            }

        }
        catch (Exception ex) {
            MessageBox.Show(ex.Message);
        }
        finally {
            if (authApps != null) authApps = null;
            if (authApp != null) authApp = null;
            if (openPorts != null) openPorts = null;
            if (openPort != null) openPort = null;
        }
    }

    protected internal void CloseFirewall() {
        INetFwAuthorizedApplications apps = null;
        INetFwOpenPorts ports = null;
        try {
            if (isAppFound(Application.ProductName + " Server") == true) {
                SetProfile();
                apps = fwProfile.AuthorizedApplications;
                apps.Remove(Application.ExecutablePath);
            }

            if (isPortFound(portsSocket[0]) == true) {
                SetProfile();
                ports = fwProfile.GloballyOpenPorts;
                ports.Remove(portsSocket[0], NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP);
            }

            if (isPortFound(portsSocket[1]) == true) {
                SetProfile();
                ports = fwProfile.GloballyOpenPorts;
                ports.Remove(portsSocket[1], NET_FW_IP_PROTOCOL_.NET_FW_IP_PROTOCOL_TCP);
            }
        }
        catch (Exception ex) {
            MessageBox.Show(ex.Message);
        }
        finally {
            if (apps != null) apps = null;
            if (ports != null) ports = null;
        }
    }

    protected internal bool isAppFound(string appName) {
        bool boolResult = false;
        Type progID = null;
        INetFwMgr firewall = null;
        INetFwAuthorizedApplications apps = null;
        INetFwAuthorizedApplication app = null;
        try {
            progID = Type.GetTypeFromProgID("HNetCfg.FwMgr");
            firewall = Activator.CreateInstance(progID) as INetFwMgr;
            if (firewall.LocalPolicy.CurrentProfile.FirewallEnabled) {
                apps = firewall.LocalPolicy.CurrentProfile.AuthorizedApplications;
                IEnumerator appEnumerate = apps.GetEnumerator();
                while ((appEnumerate.MoveNext())) {
                    app = appEnumerate.Current as INetFwAuthorizedApplication;
                    if (app.Name == appName) {
                        boolResult = true;
                        break;
                    }
                }
            }
        }
        catch (Exception ex) {
            MessageBox.Show(ex.Message);
        }
        finally {
            if (progID != null) progID = null;
            if (firewall != null) firewall = null;
            if (apps != null) apps = null;
            if (app != null) app = null;
        }
        return boolResult;
    }

    protected internal bool isPortFound(int portNumber) {
        bool boolResult = false;
        INetFwOpenPorts ports = null;
        Type progID = null;
        INetFwMgr firewall = null;
        INetFwOpenPort currentPort = null;
        try {
            progID = Type.GetTypeFromProgID("HNetCfg.FwMgr");
            firewall = Activator.CreateInstance(progID) as INetFwMgr;
            ports = firewall.LocalPolicy.CurrentProfile.GloballyOpenPorts;
            IEnumerator portEnumerate = ports.GetEnumerator();
            while ((portEnumerate.MoveNext())) {
                currentPort = portEnumerate.Current as INetFwOpenPort;
                if (currentPort.Port == portNumber) {
                    boolResult = true;
                    break;
                }
            }
        }
        catch (Exception ex) {
            MessageBox.Show(ex.Message);
        }
        finally
        {
            if (ports != null) ports = null;
            if (progID != null) progID = null;
            if (firewall != null) firewall = null;
            if (currentPort != null) currentPort = null;
        }
        return boolResult;
    }

    protected internal void SetProfile() {
        INetFwMgr fwMgr = null;
        INetFwPolicy fwPolicy = null;
        try {
            fwMgr = GetInstance("INetFwMgr") as INetFwMgr;
            fwPolicy = fwMgr.LocalPolicy;
            fwProfile = fwPolicy.CurrentProfile;
        }
        catch (Exception ex) {
            MessageBox.Show(ex.Message);
        }
        finally {
            if (fwMgr != null) fwMgr = null;
            if (fwPolicy != null) fwPolicy = null;
        }
    }

    protected internal object GetInstance(string typeName) {
        Type tpResult = null;
        switch (typeName) {
            case "INetFwMgr":
                tpResult = Type.GetTypeFromCLSID(new Guid("{304CE942-6E39-40D8-943A-B913C40C9CD4}"));
                return Activator.CreateInstance(tpResult);
            case "INetAuthApp":
                tpResult = Type.GetTypeFromCLSID(new Guid("{EC9846B3-2762-4A6B-A214-6ACB603462D2}"));
                return Activator.CreateInstance(tpResult);
            case "INetOpenPort":
                tpResult = Type.GetTypeFromCLSID(new Guid("{0CA545C6-37AD-4A6C-BF92-9F7610067EF5}"));
                return Activator.CreateInstance(tpResult);
            default:
                return null;
        }
    }

  } 
}