Usage of flash.net.Socket in Flex on IE

[surathp]

public function isNetworkAlive() : void{
socket = new Socket();
socket.addEventListener(Event.CONNECT,connectNetwo rkHandler);
socket.addEventListener(Event.CLOSE,closeNetworkHa ndler);
socket.addEventListener(SecurityErrorEvent.SECURIT Y_ERROR, errorHandler);
socket.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);


try{
//Get The Server URL
var url: String = Application.application.url;
//Get The IP Address
var ipAdd : String = url.substring((url.indexOf(":") +
3),url.lastIndexOf(":"));
socket.connect(ipAdd,8443);
}catch(er : Error){
NarusAlert.show("Network is down/disconnected. Please re-login again
after network is up.");
model.reset();

}

}

socket.connect(ipAdd,8443); is throwing SecurityErrorEvent on IE only. Works
fine on FireFox and Opera.
I am using Flex 2x.
I have done the Adobe Flash Player 9 Activex set up for IE.
Can anybody please provide solution for this.

Thanks & Regards,
Surath Patnaik