Opc.Ua.Configuration.ApplicationInstance.ConfigureFirewall C# (CSharp) Method

        private static void ConfigureFirewall(ApplicationConfiguration configuration, bool silent, bool remove)
        {
            Utils.Trace(Utils.TraceMasks.Information, "Configuring firewall.");

            // check for ports to open/close.
            StringCollection baseAddresses = new StringCollection();

            if (configuration.ServerConfiguration != null)
            {
                baseAddresses = configuration.ServerConfiguration.BaseAddresses;
            }

            if (configuration.DiscoveryServerConfiguration != null)
            {
                baseAddresses = configuration.DiscoveryServerConfiguration.BaseAddresses;
            }

            // remove access.
            if (remove)
            {
                try
                {
                    ConfigUtils.RemoveFirewallAccess(Application.ExecutablePath, baseAddresses);
                }
                catch (Exception e)
                {
                    Utils.Trace(e, "Unexpected error while removing firewall access.");
                }

                return;
            }

            // enable access.
            try
            {
                // check if firewall needs configuration.
                if (!ConfigUtils.CheckFirewallAccess(Application.ExecutablePath, baseAddresses))
                {
                    bool configure = true;

                    if (!silent)
                    {
                        string message = "The firewall has not been configured to allow external access to the server. Configure firewall?";

                        if (MessageBox.Show(message, configuration.ApplicationName, MessageBoxButtons.YesNo, MessageBoxIcon.Question) != DialogResult.Yes)
                        {
                            configure = false;
                        }
                    }

                    if (configure)
                    {
                        ConfigUtils.SetFirewallAccess(configuration.ApplicationName, Application.ExecutablePath, baseAddresses);
                    }
                }
            }
            catch (Exception e)
            {
                Utils.Trace(e, "Unexpected error while checking or changing the firewall configuration.");
            }
        }