28、Windows防火墙操作指南：端口、应用与规则管理

Windows防火墙操作指南：端口、应用与规则管理

1. 移除Windows防火墙端口

在Windows系统中，有时需要移除防火墙开放的端口以增强安全性。以下是移除端口的具体代码：

private void btnDelete_Click(object sender, EventArgs e)
{
    // Create the firewall type.
    Type FWManagerType = Type.GetTypeFromProgID("HNetCfg.FwMgr");

    // Use the firewall type to create a firewall manager object.
    dynamic FWManager = Activator.CreateInstance(FWManagerType);

    // Obtain the firewall profile information.
    dynamic FWProfile = FWManager.LocalPolicy.CurrentProfile;

    try
    {
        // Delete the port based on the port name.
        FWProfile.GloballyOpenPorts.Remove(9999,NET_FW_IP_PROTOCOL_TCP);

        // Display a success message.
        MessageBox.Show("Port successfully deleted!");
    }