Problem in Getting MAC Address of a Remote machine...

[Balagurunathan S]

Hi Friends.. I nee to get Mac address of a Remote machine for which i am using VC++ dll method("iphlpapi.dll") to do so..I am using the followin C# code to get the MAC Address.. public class clsMacAdd { [DllImport("iphlpapi.dll", ExactSpelling=true)] public static extern int SendARP( int DestIP, int SrcIP, [Out] byte[] pMacAddr, ref int PhyAddrLen ); public static string GetMacaddress(string strHostName) { System.Net.IPHostEntry Tempaddr = null; string[] Ipaddr = new string[3]; //strHostName = Request.UserHostName; if ( strHostName == "127.0.0.1" ) { strHostName = "system102"; } Tempaddr = (System.Net.IPHostEntry)Dns.GetHostByName( strHostName ); System.Net.IPAddress[] TempAd = Tempaddr.AddressList; foreach(IPAddress TempA in TempAd) { Ipaddr[1] = TempA.ToString(); byte[] ab = new byte[6]; int len = ab.Length; // This Function Used to Get The Physical Address //int r = SendARP(int(TempA.Address), 0, ab, ref len ); int r = SendARP( (int) TempA.Address, 0, ab, ref len ); string mac = BitConverter.ToString( ab, 0, 6 ); return mac; } return null; } } } I am getting the MAC address when i run in enterprise network(local),but when i host it a web server(live) i couldn't get the MAC Address..Wat could be the problem..? Someone help in this regard as early as possible.. Regards,

Balaguru