public static bool PingHost(string nameOrAddress)
{
	bool pingable = false;
	Ping pinger = null;

	try
	{
		pinger = new Ping();
		PingReply reply = pinger.Send(nameOrAddress);
		pingable = reply.Status == IPStatus.Success;
	}
	catch (PingException)
	{
		return false;
	}
	finally
	{
		if (pinger != null)
		{
			pinger.Dispose();
		}
	}

	return pingable;
}