■ 현재 네트워크 인터페이스의 MAC 주소를 변경하는 방법을 보여준다. 현재 네트워크 인터페이스를 구하고 해당 인터페이스에 대한 레지스트리를 변경한 다음 WMI를 이용해 네트워크 장치를 재활성화함으로써 변경한 MAC 주소가 적용되도록 한다.
▶ Program.cs
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using System; using System.Management; using System.Net.NetworkInformation; using System.Text.RegularExpressions; using System.Threading; using Microsoft.Win32; namespace TestProject { /// <summary> /// 프로그램 /// </summary> class Program { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 현재 네트워크 인터페이스 구하기 - GetCurrentNetworkInterface() /// <summary> /// 현재 네트워크 인터페이스 구하기 /// </summary> /// <returns>현재 네트워크 인터페이스</returns> private static NetworkInterface GetCurrentNetworkInterface() { NetworkInterface[] networkInterfaceArray = NetworkInterface.GetAllNetworkInterfaces(); int networkInterfaceArrayLength = networkInterfaceArray.Length; for(int i = 0; i < networkInterfaceArrayLength; i++) { NetworkInterface networkInterface = networkInterfaceArray[i]; if ( networkInterface.OperationalStatus == OperationalStatus.Up && networkInterface.NetworkInterfaceType != NetworkInterfaceType.Loopback && networkInterface.NetworkInterfaceType != NetworkInterfaceType.Tunnel && networkInterface.NetworkInterfaceType != NetworkInterfaceType.Wireless80211 && !networkInterface.Name.ToLower().Contains("loopback") && !networkInterface.Name.Contains("SAMSUNG") ) { return networkInterface; } } return null; } #endregion #region MAC 주소 설정하기 - SetMACAddress(networkInterface, macAddress) /// <summary> /// MAC 주소 설정하기 /// </summary> /// <param name="networkInterface">네트워크 인터페이스</param> /// <param name="macAddress">MAC 주소 (예 : "FCAA1472FBD2")</param> private static void SetMACAddress(NetworkInterface networkInterface, string macAddress) { string networkInterfaceID = networkInterface.Id; using ( RegistryKey registryKey = Registry.LocalMachine.OpenSubKey("SYSTEM") .OpenSubKey("CurrentControlSet") .OpenSubKey("Control") .OpenSubKey("Class") .OpenSubKey("{4d36e972-e325-11ce-bfc1-08002be10318}") ) { string[] subsidaryKeyNameArray = registryKey.GetSubKeyNames(); foreach(string subsidaryKeyName in subsidaryKeyNameArray) { if(!Regex.IsMatch(subsidaryKeyName, @"\d{4}")) { continue; } using(RegistryKey subsidaryRegistryKey = registryKey.OpenSubKey(subsidaryKeyName, true)) { object instanceID = subsidaryRegistryKey.GetValue("NetCfgInstanceId"); if(instanceID?.Equals(networkInterfaceID) == true) { subsidaryRegistryKey.SetValue("NetworkAddress", macAddress); using ( RegistryKey networkAddressRegistryKey = subsidaryRegistryKey.OpenSubKey("Ndi", true) .OpenSubKey("Params", true) .OpenSubKey("NetworkAddress", true) ) { networkAddressRegistryKey.SetValue(string.Empty, macAddress); networkAddressRegistryKey.SetValue("Param Desc", "Network Address"); } } } } } } #endregion #region 네트워크 인터페이스 리로드하기 - ReloadNetworkInterfaec(networkInterface) /// <summary> /// 네트워크 인터페이스 리로드하기 /// </summary> /// <param name="networkInterface">네트워크 인터페이스</param> private static void ReloadNetworkInterfaec(NetworkInterface networkInterface) { SelectQuery selectQuery = new SelectQuery($"SELECT * FROM Win32_NetworkAdapter WHERE GUID='{networkInterface.Id}'"); ManagementObjectSearcher managementObjectSearcher = new ManagementObjectSearcher(selectQuery); foreach(ManagementBaseObject managementBaseObject in managementObjectSearcher.Get()) { ManagementObject managementObject = managementBaseObject as ManagementObject; managementObject.InvokeMethod("Disable", null); while(GetCurrentNetworkInterface() != null) { Thread.Sleep(1000); } managementObject.InvokeMethod("Enable", null); while(GetCurrentNetworkInterface() == null) { Thread.Sleep(1000); } } } #endregion #region 프로그램 시작하기 - Main() /// <summary> /// 프로그램 시작하기 /// </summary> private static void Main() { NetworkInterface networkInterface1 = GetCurrentNetworkInterface(); Console.WriteLine($"이전 MAC 주소 : {networkInterface1.GetPhysicalAddress()}"); SetMACAddress(networkInterface1, "FCAA1472FBD2"); // FC-AA-14-72-FB-D2 ReloadNetworkInterfaec(networkInterface1); NetworkInterface networkInterface2 = GetCurrentNetworkInterface(); Console.WriteLine($"현재 MAC 주소 : {networkInterface2.GetPhysicalAddress()}"); Console.ReadKey(false); } #endregion } } |
